Equal volumes of 0.2 M NaOH and 0.2 M Ba(OH)2 are mixed with each other. Hydroxyl ion concentration of the resultant mixture is ----- M
0.4
0.2
0.3
0.25
N = V1N2+V2N2Total volume of the mixture ; N =10.21+10.222 ; N = 0.3 N ; Nbase=OH-