Write the expression for the equilibrium constant for each of the following reaction:
2Fe2O3(s)+3C(s)⇌4Fe(s)+3CO2(g)
A) Kc=[CO2]3
B) Kc=[Fe]4[CO2]3[Fe2O3]2[C]3
C) Kc=[Fe2O3]2[C]3[Fe]4[CO2]3
D) Kc=2[Fe2O3]3[C]4[Fe]3[CO2]
Answers
The correct expression for the equilibrium constant (Kc) for the reaction:
\(2Fe2O3(s) + 3C(s) ⇌ 4Fe(s) + 3CO2(g)\) is: \(Kc=[Fe]4[CO2]3/[Fe2O3]2[C]3\)
The equilibrium constant expression for the given reaction, \(2Fe2O3(s) + 3C(s) ⇌ 4Fe(s) + 3CO2(g)\) is written as the ratio of the product concentrations raised to their respective coefficients divided by the reactant concentrations raised to their respective coefficients.
The ratio of the equilibrium concentrations of the products to the concentrations of the reactants raised to their respective powers to match the coefficients in the equilibrium equation at equilibrium is K, according to the law of mass action. The equilibrium constant expression is known as the ratio, a condition where there is a balance between opposing and static forces.
In this case, it would be:
\(Kc = ([Fe]^4[CO2]^3)/([Fe2O3]^2[C]^3)\)
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The correct expression for the equilibrium constant for the given reaction is:
C) Kc=[Fe2O3]2[C]3[Fe]4[CO2]3
The equilibrium constant (Kc) for a chemical reaction is written using the concentrations of the species involved in the reaction. Here's the general format for writing the equilibrium constant expression:
For the generic reaction:
aA + bB ⇌ cC + dD
The equilibrium constant (Kc) expression would be: Kc = [C]^c [D]^d / [A]^a [B]^b
where [A], [B], [C], and [D] represent the concentrations of the respective species at equilibrium, and a, b, c, and d are the stoichiometric coefficients of the species in the balanced chemical equation.
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Related Questions
I used a stick of (vegan) butter as our example of thinking about how temperature changes the properties of something when it is wamer or cooler.
1. What is something else you could use to describe how temperature affects the properties of when it is warmer or cooler? How does this change whether it is warm or cold. Describe it.
Answers
describe something with numbers in science
Answers
1-ethylycloheptene was treated with mcpba, followed by sodium methoxide in methanol. what was the product?
Answers
The reaction of 1-ethylcycloheptene with MCPBA (meta-chloroperoxybenzoic acid) followed by sodium methoxide in methanol leads to the formation of an epoxide.
MCPBA is a peracid that is commonly used to convert alkenes into epoxides through an epoxidation reaction. It adds an oxygen atom to the double bond of the alkene, resulting in the formation of an oxirane ring.
In this case, when 1-ethylcycloheptene reacts with MCPBA, an epoxide is formed. The specific product will depend on the regiochemistry and stereochemistry of the starting compound. Without further information on the exact structure and conditions of the reaction, it is difficult to determine the exact product.
However, the general product can be represented as an epoxide derived from 1-ethylcycloheptene:
Epoxide
1−ethylcycloheptene+MCPBA+NaOMe/MeOH→Epoxide
The exact position and stereochemistry of the epoxide ring would be determined by the specific structure of 1-ethylcycloheptene and the reaction conditions used.
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which laboratory department does sensitivity testing?
Answers
Sensitivity testing is performed by the microbiological division.
What is the Microbiology Department?
The laboratory groups that make up the department—which was founded in 1962—include those for bacteriology, parasitology, immunology, tuberculosis, enteric, virology, viral research& diagnostic laboratory (VRDL), and mycology. The following departments are part of the multidisciplinary division that is part of the Department of Microbiology: Bacteriology, Anaerobic Bacteriology, Virology, Mycology, Immunology, Parasitology, HIV laboratory (FICTC), Mycobacteriology, and Hospital Infection Control Laboratory. Microbiologists research the minute organisms, such as bacteria, fungus, viruses, and algae, that cause illnesses. In order to better understand these organisms' traits and prevent, diagnose, and cure infectious diseases, they concentrate on identifying and growing them.
Studying the biology of minute organisms like viruses, bacteria, algae, fungi, slime molds, and protozoa is known as microbiology.
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what charge in coulombs passes through a cell if 2.3×10^-7 moles of electrons are transferred in this cell? select the correct answer below: a)0.022C b)0.41C c)1.5C d)7.2 C
Answers
The charge in coulombs is a) 0.022 C
What is electric charge?
Electric charge is a fundamental property of particles such as electrons and protons, which are the building blocks of atoms.
To determine the charge in coulombs that passes through a cell when a certain number of moles of electrons are transferred, we can use Faraday's constant.
Faraday's constant (F) represents the charge carried by one mole of electrons and is equal to approximately 96,485 coulombs per mole (C/mol).
In this case, we have\(2.3*10^{-7 }\)moles of electrons transferred. To calculate the charge in coulombs, we can multiply the number of moles by Faraday's constant:
Charge (C) = (\(2.3*10^{-7 }\) mol) * (96,485 C/mol)
Calculating this expression:
Charge (C) = 22.222 C
Therefore, the correct answer is: a) 0.022 C
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in a nucleic acid, adjacent nucleotides are bound to each other in what way?
Answers
The adjacent nucleotides are bound to each other through a phosphodiester bond in a nucleic acid.
What is nucleic acid?Nucleic acid is a biopolymer made up of nucleotide monomers that make up nucleic acid chains. The nucleotide's three components are a five-carbon sugar, a phosphate group, and a nitrogenous base. Nucleic acids are present in all living cells, including viruses and bacteria, and they play a critical role in storing, transmitting, and expressing genetic information. RNA and DNA are two types of nucleic acids.
The phosphate group in one nucleotide forms a phosphodiester bond with the hydroxyl group on the sugar molecule of the next nucleotide in line in nucleic acids. This reaction is carried out by removing a molecule of water, resulting in a strong covalent bond between two nucleotides. These bonds make up the sugar-phosphate backbone of a nucleic acid chain, which is fundamental to its structure.
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Which of the following is the best nucleophile in water?
CH3SCH3
CH3OCH3
Cl-
I-
Answers
In water, the best nucleophile among the given options is I- (iodide ion).
A nucleophile is a species that donates a pair of electrons to form a new chemical bond. Iodide ion has a larger size compared to chlorine ion (Cl-), which results in a more diffuse negative charge. This increased electron density enhances its nucleophilicity.
Additionally, the larger size of iodide ion reduces the strength of its ionic bond with hydrogen, making it a better leaving group. CH3SCH3 (dimethyl sulfide) and CH3OCH3 (dimethyl ether) are organic compounds and do not exhibit significant nucleophilic behavior in water.
Therefore, I- is the strongest nucleophile among the given options in an aqueous environment.
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calculate the heat of reaction delta h for the following reaction: ccl4(g) h2o(g) -> chcl3(g) hcl(g)
Answers
The heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol. To calculate the heat of reaction (ΔH) for the given reaction:
CCl₄(g) + H₂O(g) -> CHCl₃(g) + HCl(g)
You would need the standard enthalpies of formation for each compound involved in the reaction. The standard enthalpy of formation (ΔHf) is the enthalpy change when one mole of a compound is formed from its elements in their standard states.
Here are the standard enthalpies of formation for the compounds involved:
ΔHf[CCl₄(g)] = -135.5 kJ/mol
ΔHf[H₂O(g)] = -241.8 kJ/mol
ΔHf[CHCl₃(g)] = -104.7 kJ/mol
ΔHf[HCl(g)] = -92.3 kJ/mol
To calculate ΔH for the reaction, you need to sum up the enthalpies of formation of the products and subtract the sum of the enthalpies of formation of the reactants:
ΔH = ΣΔHf(products) - ΣΔHf(reactants)
ΔH = [ΔHf[CHCl₃(g)] + ΔHf[HCl(g)]] - [ΔHf[CCl₄(g)] + ΔHf[H₂O(g)]]
ΔH = [(-104.7 kJ/mol) + (-92.3 kJ/mol)] - [(-135.5 kJ/mol) + (-241.8 kJ/mol)]
ΔH = -196.9 kJ/mol - (-377.3 kJ/mol)
ΔH = 180.4 kJ/mol
Therefore, the heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol.
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How do H3O+ and OH relate to acids, bases and the pH scale?
Answers
Answer: An acid is defined with having more [H₃O+] ions, and a base is defined with having more [OH-] ions. On the pH scale, an acid has a lower pH and a base has a higher pH. With this being said, the lower the pH, the more [H₃O+] ions are present and the higher the pH, the more [OH-] ions are present.
Explanation:
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what is M2 ?how does FOMCs could affect M2 and why ?
Answers
M2 refers to the money supply measure known as M2 money stock.
The FOMC's decisions and actions can impact M2 through its control over interest rates, open market operations, and the influence on economic conditions and confidence. Changes in monetary policy by the FOMC aim to manage the money supply and promote price stability, economic growth, and employment.
M2 is a broad measure of the money supply that includes cash, checking and savings deposits, money market funds, and other time deposits.
The Federal Open Market Committee (FOMC) is a committee within the U.S. Federal Reserve System that is responsible for making decisions regarding monetary policy, including setting interest rates and implementing measures to manage the money supply.
The actions taken by the FOMC can have an impact on M2 and the broader money supply in the economy. Here's how:
1. Open Market Operations: The FOMC conducts open market operations by buying or selling government securities in the open market. When the FOMC buys government securities, it injects money into the banking system, increasing bank reserves and potentially leading to an expansion of M2.
2. Interest Rate Policy: The FOMC sets the target federal funds rate, which is the interest rate at which depository institutions lend and borrow funds from each other overnight. By adjusting the federal funds rate, the FOMC influences borrowing costs for banks and, in turn, affects their lending practices. Changes in interest rates can impact the demand for loans and affect the growth of M2.
3. Impact on Confidence and Spending: The FOMC's actions and communications can influence consumer and business confidence. When the FOMC signals a more accommodative monetary policy stance, it can encourage borrowing and spending, potentially leading to an increase in the growth of M2.
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If 12.52mol of aluminum metal is reacted with2.38mol of iron (III) oxide, how many particles, inmoles of iron metal are likely to form?Reaction: 2Al(s) + Fe₂O3(aq)--> Al2O3(aq) + 2Fe(s)
Answers
Answer
4.76 mol Fe
Procedure
Consider the following balanced equation and determine the limiting reagent using the coefficients method
2Al(s) + Fe₂O3(aq)--> Al2O3(aq) + 2Fe(s)
\(12.52\text{ mol Al}\frac{2\text{ mol Fe}}{2\text{ mol Al}}=12.52\text{ mol Fe}\)\(2.38\text{ mol Fe}_2\text{O}_3\frac{2\text{ mol Fe}}{1\text{ mol Fe}_2\text{O}_3}=4.76\text{ mol Fe}\)The lowest amount is the one produced by the iron (III) oxide therefore that is the limiting reagent and 4.76 mol of Fe is the max amount that can be produced of Iron.
for every molecule of glucose, approximately how many molecules of atp are produced?
Answers
Answer:
A total of 36 molecules of ATP are produced for every molecule of glucose
Which option describes an alloy?
a. homogenous solution made up of two or more metals
b. homogenous mixture made up of two or more metals
c. homogenous solution of a metal with a nonmetal
d. heterogeneous mixture made up of two or more metals
Answers
Answer:
The answer is d
An alloy is a homogenous mixture made up of two or more metals rather than heterogenous mixtures.
What are heterogenous mixtures?
Heterogenous mixtures is defined as a type of mixture where in the composition is not uniform throughout the mixture.It consists as two or more phases. The phases are chemically distinct from each other.
As there are two or more phases present in heterogenous mixtures they can be separated by solvent extraction where in one phase is miscible with the solvent and the other phase is immiscible.
Components of a heterogenous mixtures are distinctly visible . There are two types of heterogenous mixtures, the colloids and the suspensions.These two vary with each other with respect to particle size.
Heterogenous mixtures can even be separated by filtration.
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Titration for Acetic Acid in Vinegar-Lab Report Exercise 1: Determining the Concentration of Acetic Acid Data Table 1. NaOH Titration Volume Initial NaOH Volume (mL) 8.59 9.20 9.20 Final NaOH Volume Trial 1 Trial 2 Trial 3 (mL) 0.20 1.00 2.01 Total volume of NaOH used (mL) 8.39 8.20 7.19 Average Volume of NaOH Used (mL): 7.93 Data Table 2. Concentration of CH3COOH in Vinegar Average volume of NaOH Concentration CH3COOH % CH3C00H in vinegar used (mL) in vinegar (mol/L) 7.93 0.793 4.76% If the manufacturer of the vinegar used in the experiment stated that the vinegar contained 5.0% acetic acid, what would the percent error between your result and the manufacturer's statement be? Show your calculations. . Given Average volume of NaOH7.93mL Volume of acetic acid 5.0mL Conceptual Plan M1V1 M2V2 M1 M2V2/V1 Percent error((accepted value - experimental value)/accepted value) x 100 Solve 0.5M x 7.93mL 5.0mL 0.793M. . CH3COOH 0.793M Moles of acetic acid (1000mLx5 g/100mL) x 1mol /60.05g 0.833mol Molarity 0.833mol1L 0.833M Percent error-(0.833 M-0.793 M ) / 0.833 M) x 100-4.80 % Percent error = 4.80 %
Answers
The mass of acetic acid found to be 0.675g and percentage acetic acid in vinegar is 9.64%
Why are titrations performed?Titration is used to determine the equivalence point, or the point at which chemically equivalent amounts of the reactants have been incorporated. The quantity of reactants that have been mixed at the equivalence point will depend on the stoichiometry of the reaction.
In question which percentage of acetic acid in vinegar is asked it should be
M₁V₁ (acetic acid)= M₂ V₂ (NaOH)
M₁ = 1.5M ×7.5 mL = 11.25mmol
Mass of acetic acid = (11.25×60)/1000= 0.675 g
% acetic acid in vinegar = (0.675×100)/7= 9.64
Furthermore, the addition of phenolphthalein to the base will cause the color change at the end point to be undone.
Rest of answers appear to be accurate.
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in need of help very soon please.
Answers
Answer:
hello, i hope this helps.
Explanation:
1 - group
2 - period
3 - periodic table
4 - family
5 - octet rule
6 - valence electrons
Looking at a potential energy diagram what is the name given to represent the amount of energy given off during an exothermal reaction?
Released energy
Stored energy
Activation energy
Free energy
Answers
Answer:
Released energy
Explanation:
Answer:
The answer is: Released energy
Hope this helped <33
Explanation:
need help on this im super lost
Answers
Answer:
A
Explanation:
The picture given in the question is very difficult to understand. Please the picture attached below. It may help you more to understand.
..
A potential energy diagram shows the change in potential energy of a system as reactants are converted into products.
Question 5 (10 points) How many moles of Cuci, are needed to react with 4 moles of Al? + 3CuCl2 (aq) → Cu (s) + 2AlCl3 (24) O a 6 moles 1 mole 2 moles OO 8 moles
Answers
Answer:
A. 6 moles
Explanation:
This question contains a chemical reaction between aluminum (Al) and Copper(II)Chloride to give copper and aluminum chloride. The unbalanced chemical equation is as follows:
Al (s) + 3CuCl2 (aq) → Cu (s) + 2AlCl3
To balance the equation, we use coefficients in front of Al and Cu to ensure the amount of both are uniform on both sides of the equation. The balanced equation is as follows;
2Al (s) + 3CuCl2 (aq) → 3Cu (s) + 2AlCl3
From the balanced equation, 2 moles of Al reacts with 3 moles of CuCl2
Hence, 4 moles of Al will react with (4 × 3) ÷ 2
= 12 ÷ 2
= 6 moles of CuCl2
Which of the following is an ionic compound?
(A) CO₂
B) NH3
C) KBr
D) C12
Answers
Answer:
co2
Explanation:
it is an ionic compound
What happens when molten lead (ii)chloride is electrolysed?
Answers
Answer:
Pb 2+ ions gain electrons at the cathode and become Pb atoms. Br - ions lose electrons at the anode and become Br atoms, which pair up to form Br 2 molecules.
This is During Electrolysis
Explanation:
what are some physical propeties of copper?
Put appropriate exact correct answers due in 10 mins
*please note that if you put incorrect and inappropriate answers I won't mark as braninlist I will report answer*
Answers
Answer:
Explanation: Reddidh colour
bright metallic luster
malleable and ductile
good conductor of heat
Answer:
Copper has a melting point of 1083.4 +/- 0.2°C, boiling point of 2567°C, specific gravity of 8.96 (20°C), with a valence of 1 or 2.
Copper is reddish colored and takes a bright metallic luster.
It is malleable, ductile, and a good conductor of electricity and heat
If the pH of a buffer solution containing acetic acid/sodium acetate = 5.00, and the molarity of acetic acid is 0.10, then what is the molarity of sodium acetate?
(A) 0.0064. (B) 0.034. (C) 0.078. (D) 0.10. (E) 0.18. (F) 0.28. (G) 0.45.
Answers
The pKa of acetic acid is 4.76. The pH of the buffer solution is given as 5.00. The pH is greater than the pKa, therefore, the acetate ion (conjugate base) will be predominant in the buffer.
Using the Henderson-Hasselbalch equation, we have:
pH = pKa + log([conjugate base]/[acid])
5.00 = 4.76 + log([conjugate base]/[0.10])
0.24 = log([conjugate base]/[0.10])
Antilog(0.24) = [conjugate base]/[0.10]
1.78 = [conjugate base]/[0.10]
[conjugate base] = 0.178 M
Therefore, the molarity of sodium acetate is 0.178 M. Answer: None of the given options is correct.
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Under what pressure did 10L of gas change to if the original pressure was 4 atm on 3L?
Answers
Answer:
11111
Explanation:
1110001001
How does Amber data provide possible evidence that matter is made of particles too small to be seen
Answers
why should you repeat the experiment of preparing soluble salts by titration without using an indicator before boiling it?
Answers
Answer:
Explanation:
Titration: titrate twice, the first time with an indicator to determine how much sodium hydroxide is needed to completely react with hydrochloric acid, and the second time without an indicator to prevent the contamination of the sodium chloride salt produced
The part of an atom that is responsible for the bonding of atoms is
Answers
Answer:
the answer is electrons
Explanation:
electrons are responsible for the chemical bonding.
Which chemical equation best represents the process of photosynthesis?
Answers
Answer:
6CO2 + 6H20 ----> C6H12O6 + 6O2
Explanation:
(Carbon Dioxide) + (Water) ------> (Glucose) + (Oxygen)
Answer:
A
Explanation:
CO2= carbon dioxide
H2O= water
C6H12O6=glucose
O2=oxygen
i will put the questions in the comments that i need help with*
Answers
3. Use the mole ratio from question 1 to find the moles of NaOH used. Remember, in a 1:1 ratio if we use 1 mole of KHCH404, then we use 1 mole of NaOH. Record the moles of NaOH used in each trial below.
(please answer all questions with work)
Answers
From the mole ratio of the acid to base, the higher the volume of the acid used, the higher will the volume of the base required to neutralize the acid.
The color will the solution of potassium phthalate and phenolphthalein appear is Pink.
What is the mole ratio of the acid-base reaction between HCl and NaOH?The mole ratio of the acid-base reaction between HCl and NaOH is determined from the equation of the reaction given below.
Equation of the reaction: HCl + NaOH ----> NaCl + H₂O
From the equation of the reaction, the mole ratio of the acid-base reaction between HCl and NaOH is 1 : 1.
Hence, if the concentration of the acid and the base are the same in the acid-base reaction between HCl and NaOH, the more the volume of acid used, the more will be the volume of base required to neutralize the acid.
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Atomic radius decreases from left to right across a row in the periodic
table because...
A. As more electron shells are added, atoms increase in size
B. electrons in inner shells shield the valence electrons from the pull of the nucleus
C. More protons in the nucleus pull electrons closer causing the atom to become smaller
D. Atomic radius does not decrease from left to right across a row in the periodic table
Answers
Atomic radius decreases from left to right across a row in the periodic table because electrons in inner shells shield the valence electrons from the pull of the nucleus.
What is nucleus ?Electrically charged protons and electrically neutral neutrons make up atomic nuclei. The strongest basic force known to science, often known as the strong force, holds these things together.
The nucleus normally makes up more than 99.9% of the atom's mass, but far less than.01 percent of its volume.
On the periodic table, atomic radius typically increases as you walk down a group and decreases as you move from left to right across a period.
Thus, option B is correct.
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