Given pK_a(C6H5OH) = 10.0 and pK_a(C2H5OH) = 15.9, what is log_10K for C6H5OH + C2H5O- C6H5O- + C2H5OH?

JEE Main levelSingle correct optionDifficulty 2 of 3g2118

Given $p K_{a} (C X_{6} H X_{5} OH) = 10.0$ and $p K_{a} (C X_{2} H X_{5} OH) = 15.9$ , what is $lo g_{10} K$ for $C X_{6} H X_{5} OH + C X_{2} H X_{5} O X^{-} C X_{6} H X_{5} O X^{-} + C X_{2} H X_{5} OH$ ?

The acid is phenol (10.0) and the conjugate acid of the base is ethanol (15.9).

lo g K = 15.9 - 10.0 = 5.9

, so the reaction goes essentially to completion.

Which of the following compounds gives brisk effervescence when added to aqueous sodium hydrogencarbonate? NEET level
Take pK_a(H2CO3) = 6.4. Which of the following reactions does NOT proceed appreciably in the forward direction? JEE Main level
Using pK_a(CH3COOH) = 4.76 and pK_a(H2O) = 15.7, the value of log_10K for CH3COOH + OH- <=> CH3COO- + H2O is closest to JEE Main level
An ether solution contains benzoic acid, phenol and toluene. It is shaken with dilute aqueous NaHCO3 (pK_a of H2CO3 is 6.4; benzoic acid 4.2... JEE Main level
Given pK_a(HC#CH) = 25 and pK_a(C2H5OH) = 15.9, the value of log_10K for HC#CH + C2H5O- <=> HC#C- + C2H5OH is JEE Main level
Which base converts a simple ketone such as acetone (pK_a approx 19.3 in water) almost completely into its enolate? JEE Main level