Calculate "pH" of "0.02M-HA" solution.Ka for HA=`2times10^(-12)` (log2=0.3,log3=0.48)

Calculate pH of 10^(-7)M of NaOH solution at 25^(@)C (take log0.618=0.21)

Calculate [H_3O^+],[OH^-] and pH of a 0.2 M solution of HCN (K_a=7.2xx10^(-10)) .

Calculate pH solution: 0.1 M CH_(3)COOH (K_a=1.8 xx 10^(-5))

Calcuate pH of 10^(-8)M HCl solution at 25^(@)C (Take log1.05=0.02)

Calculate the pH of a 0.01 M solution of benzoic acid, the K_a being 7.3xx10^(-5)

A reaction \(2A \rightarrow 3B\) takes place according to first order kinetics the time in which the concentration of reactant and product become equal is [Given ] \(K=2.2\times10^{-2}min^{-1}\),log5=0.7,log3=0.48,log2=0]

Calculate pH values of (i) 0.2 M H_(2)SO_(4) solution (ii) 0.2M Ca(OH)_(2) solution.

Calculate pH of resultant solution of 0.1 M HA + 0.1 M HB [K_a (HA) =2 xx 10^(-5), K_a (HB)=4 xx 10^(-5)]