Question
100 c.c. of N/10 NaOH solution is mixed with 100 c.c. of N/5 HCl solution and the whole volume is made to 1 litre. The pH of the resulting solution will be
Joshi sir comment
mili gm eq of NaOH = NV = 10
mili gm eq of HCl = 20
total mili gm eq = 20-10 = 10 of HCl
so N = 10/200 = 0.05
so pH = log[1/0.05]