Given below are two statements
Statement I : A catalyst cannot alter the equilibrium constant ( ) of the reaction, temperature remaining constant
Statement II : A homogenous catalyst can change the equilibrium composition of a system temperature remaining constant
In the light of the above statements, choose the correct answer from the options given below
Statement I : A catalyst cannot alter the equilibrium constant ( ) of the reaction, temperature remaining constant
Statement II : A homogenous catalyst can change the equilibrium composition of a system temperature remaining constant
In the light of the above statements, choose the correct answer from the options given below
- (A)Statement I is false but Statement II is true
- (B)Both Statement I and Statement II are true
- (C)Both Statement I and Statement II is false
- (D)Statement I is true but Statement II is false✓ Correct
Answer: (D)
Solution
A catalyst lowers the activation energy of the forward and reverse reactions by the same amount, so it only speeds the approach to equilibrium; it cannot alter at constant temperature, so Statement I is true. Because is fixed by thermodynamics at a given temperature, a catalyst (homogeneous or heterogeneous) cannot shift the equilibrium position, so the equilibrium composition is unchanged. Statement II is therefore false. Hence: Statement I is true but Statement II is false.
JEE Main · 2025 · 03 Apr 2025 · Shift 1 · Single correct option