Chemistry-pH & Buffer Solutions
NEET Chemistry pH & Buffer Solutions Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 11
Assertion (A): In the thermal decomposition of calcium carbonate, the equilibrium constant Kc depends solely on the concentration of CO2 gas. | Reason (R): Both CaO and CaCO3 are solids and their concentrations remain constant during the reaction.
A
Both A and R are true, and R is the correct explanation of A.
B
Both A and R are true, but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false.
Correct Answer
Option A
Detailed Explanation
In heterogeneous equilibria, the concentrations of pure solids like CaO and CaCO3 are constant, so Kc depends only on the concentration of gases like CO2.
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