5 Questions
What is the chemical equation for the decomposition of silver carbonate upon heating?
Ag2CO3(s) → Ag2O(s) + CO2(g)
What is the value of Kp for the decomposition reaction of silver carbonate at 503 K?
1.5 atm
Write the Kp expression for the reaction: Ag2CO3(s) → Ag2O(s) + CO2(g).
Kp = P_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?
78%
What is the equilibrium expression for the reaction: 2NOCI(g) ↔ 2NO(g) + Cl2(g)?
Kp = (P_NO)^2 * P_Cl2 / (P_NOCI)^2
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
Solve two problems involving chemical equilibrium reactions, including writing a Kp expression and calculating equilibrium pressure of carbon dioxide.
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