Question

For the following Assertion and Reason, the correct option is

Assertion (A): When Cu (II) and Sulphide ions are mixed, they react together extremely quickly to give a solid.

Reason (R): The equilibrium constant of Cu²⁺ (aq) + S^2– (aq) ⇌ CuS (s) is high because the solubility product is low.

• A. a) (A) is false and (R) is true.
• B. b) Both (A) and (R) is false
• C. c) Both (A) and (R) are true but (R) is not the explanation for (A).
• D. d) Both (A) and (R) are true but (R) is the explanation for (A).

Answer 1

The correct option is C

c) Both (A) and (R) are true but (R) is not the explanation for (A).

Solution:

Answer: (d) is correct

Both A and R are true, but R is not the explanation for A.

1. A slow or fast process is a( kinetic parameter) but to an extent less or more is a (thermodynamic parameter).
2. The rate of the chemical reaction is independent of the value of the equilibrium constant.
3. The reaction of the assertion statement given below

:

The assertion statement tells about the Kinetic process that is how fast they react while the reasoning statement tells about the thermodynamic process which is how stable the product is in the reaction.