What is [NH$$_{4}^+$$] in a solution that is 0.02 M NH₃ 0.01 M KOH ? [K_b(NH₃) = 1.8 $$\times$$ 10^$$-$$5]

For an isomerisation reaction A $$\rightleftharpoons$$ B, the temperature dependence of equilibrium constant is given by

log_e K = 4.0 $$-$$ $$\frac{2000}{T}$$

The value of $$\Delta$$S$$^\circ$$ at Hook is, therefore