The pH of a $5\times 10^{-4}\mathrm{M}$ solution of $\mathrm{Ba}(\mathrm{OH}){}_2$ at 298 K (assume complete ionisation) is

More questions on pH of strong and weak acids and bases, mixtures

• The pH of a 0.01 M solution of HCl at 298 K is NEET level
• The pH of a 0.001 M solution of NaOH at 298 K is NEET level
• For a weak monobasic acid HA of concentration 0.1 M and K_a=10^-5, the pH (using [H+]=sqrtK_a c) is NEET level
• The pH of a 0.005 M solution of H2SO4 at 298 K, assuming complete ionisation of both protons, is NEET level
• The degree of ionisation of 0.1 M acetic acid (K_a=1.8x10^-5) is nearest to (use alpha=sqrtK_a/c) NEET level
• A 0.1 M solution of a weak monobasic acid has pH 3.0. Treating ionisation as small compared with c, its pK_a is NEET level