Question

Determine of pH of acid solutions like 0.1m hcl,0.5m hcl,0.025m hcl,0.0125m hcl by using quinhydrone and calomel electrode .compare the values of pH with theoretically calculated values.

Answer 1

pH = -lg [H + ];
0.1m hcl: pH = 1;
0.5m hcl: pH = 0.3;
0.025m hcl: pH = 1.6;
0.0125m hcl: pH = 1.9.