For $0.010\mathrm{M}$ $\mathrm{NaCN}$ ($K_a$ of HCN $=4.9\times 10^{-10}$), the percentage degree of hydrolysis, using $h=\sqrt{K_h/C}$, is closest to

More questions on Salt hydrolysis: pH of salts of weak acid or weak base

• What is the pH of a 0.10 M aqueous solution of CH3COONa? (K_a of acetic acid = 1.8x 10^-5; use pH = 7 + tfrac12(pK_a + log C)) NEET level
• The aqueous solution of which of the following salts has pH less than 7 at 298 K? NEET level
• The base dissociation constant of ammonia is K_b = 1.8x 10^-5 and K_w = 1.0x 10^-14. What is the hydrolysis constant K_h of NH4+ ? NEET level
• Calculate the pH of 0.20 M NH4Cl at 298 K. (K_b of NH3 = 1.8x 10^-5; use pH = 7 - tfrac12(pK_b + log C)) JEE Main level
• 0.05 M NH4CN is prepared. Given pK_a(HCN) = 9.3 and pK_b(NH3) = 4.76, and using pH = 7 + tfrac12(pK_a - pK_b) for the salt of a weak acid an... JEE Main level
• The pH of 0.10 M CH3COONa (K_a = 1.8x 10^-5) is calculated by the usual hydrolysis formula. The solution is now diluted to 100 times its vol... JEE Main level