Class 11 NEET Chemistry Equilibrium Questions Part 1

$\mathrm{NH}_{4} \mathrm{OH}$ is a weak base but $\mathrm{HCl}$ is a strong acid in solution, so $\mathrm{pH}$ of $\mathrm{NH}_{4} \mathrm{Cl}$ solution is comparatively low. $\mathrm{NaNO}_{3}$ is a salt of strong base and strong acid, so $\mathrm{pH}$ of the solution will be 7 . Hydrolysis of potassium acetate (a salt of a weak acid and a strong alkali) gives a weakly alkaline solution, since the acetate ion acts as a weak base. The pH of this solution $\approx 8.8$. Hydrolysis of sodium carbonate (a salt of strong alkali and a weak acid) gives an alkaline solution The pH of this solution is $> 10$.