Assertion (A):	For any chemical reaction at a particular temperature, the equilibrium constant is fixed and is a characteristic property.
Reason (R):	Equilibrium constant is independent of temperature.

1.	Both (A) and (R) are true and (R) is the correct explanation of (A).
2.	Both (A) and (R) are true but (R) is not the correct explanation of (A).
3.	(A) is true but (R) is false.
4.	(A) is false but (R) is true.

Given below are two statements: 

Given below are two statements: 

The value of $∆\mathrm{n}$ for the following reaction will be :

${\mathrm{NH}}_4\mathrm{Cl}\left(\mathrm{s}\right)\rightleftharpoons {\mathrm{NH}}_3\left(\mathrm{g}\right)+\mathrm{HCl}\left(\mathrm{g}\right)$

For the reaction ${\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{I}}_2\left(\mathrm{g}\right)\rightleftharpoons 2\mathrm{HI}\left(\mathrm{g}\right)$, the standard free energy is $∆{\mathrm{G}}^{⊝}>0$. The equilibrium constant (${\mathrm{K}}_{\mathrm{c}}$) would be :

An incorrect statement about equilibrium among the following is:

PCl₅, PCl₃, and Cl₂ are at equilibrium at 500 K in a closed container and their concentrations are 0.8×10^-3 mol L^-1 , 1.2×10^-3 mol L^-1 and 1.2×10^-3 mol L-1, respectively.
The value of  K_c  for the reaction PCl₅(g) ⇌ PCl₃(g) + Cl₂(g) will be:

An incorrect statement about equilibrium among the following is:

When hydrochloric acid is added to cobalt nitrate solution at room temperature, the following reaction takes place and the reaction mixture becomes blue. On cooling the mixture it becomes pink
\(\small{\left[\mathrm{Co}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}(\text {Pink})\left(\mathrm{aq})+4 \mathrm{Cl}^{-}(\mathrm{aq}) \rightleftharpoons\left[\mathrm{CoCl}_4\right]^{2-}(\text {Blue})(\mathrm{aq})+6 \mathrm{H}_2 \mathrm{O}(\mathrm{l})\right.}\)

On the basis of the information given above, mark the correct answer: