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Questions and Answers
What is the chemical equation for the decomposition of silver carbonate upon heating?
What is the chemical equation for the decomposition of silver carbonate upon heating?
- Ag2CO3(s) → Ag2O(s) + CO2(g) (correct)
- Ag2CO3(s) → Ag2(s) + CO2(g)
- Ag2CO3(s) → Ag(s) + CO2(g)
- Ag2CO3(s) → AgO(s) + CO2(g)
What is the value of Kp for the decomposition reaction of silver carbonate at 503 K?
What is the value of Kp for the decomposition reaction of silver carbonate at 503 K?
- 2.5 atm
- 0.5 atm
- 3.5 atm
- 1.5 atm (correct)
Write the Kp expression for the reaction: Ag2CO3(s) → Ag2O(s) + CO2(g).
Write the Kp expression for the reaction: Ag2CO3(s) → Ag2O(s) + CO2(g).
- *Kp* = P_CO2 / [Ag2CO3]
- *Kp* = [CO2]
- *Kp* = P_CO2 (correct)
- *Kp* = [Ag2O][CO2]
What percentage of nitrosyl chloride is present at equilibrium if 1.0 mol of nitrosyl chloride is placed in a closed container at 823 K?
What percentage of nitrosyl chloride is present at equilibrium if 1.0 mol of nitrosyl chloride is placed in a closed container at 823 K?
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What is the equilibrium expression for the reaction: 2NOCI(g) ↔ 2NO(g) + Cl2(g)?
What is the equilibrium expression for the reaction: 2NOCI(g) ↔ 2NO(g) + Cl2(g)?
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Study Notes
Chemical Equilibrium
Silver Carbonate Decomposition
- When silver carbonate is heated, it decomposes into silver oxide and carbon dioxide according to the reaction: Ag2CO3(s) → Ag2O(s) + CO2(g)
- At 503 K, the value of Kp for this reaction is 1.5 atm
- The Kp expression for this reaction is: Kp = P(CO2)
- The equilibrium pressure of carbon dioxide at 503 K can be calculated using the given Kp value
Nitrosyl Chloride Dissociation
- When nitrosyl chloride gas is heated, it dissociates reversibly into nitric oxide and chlorine according to the reaction: 2NOCI(g) ↔ 2NO(g) + Cl2(g)
- The Kp expression for this reaction is: Kp = (P(NO)^2 * P(Cl2)) / (P(NOCI))^2
- If 1.0 mol of nitrosyl chloride gas is heated to 823 K, the equilibrium reached contains 78% of nitrosyl chloride and the pressure in the vessel is 5.0 atm
- The value of Kp at 823 K can be computed using the given equilibrium composition and pressure
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Description
Solve two problems involving chemical equilibrium reactions, including writing a Kp expression and calculating equilibrium pressure of carbon dioxide.
