At certain temperature the proton concentration of pure water is 2.5 xx10^(-7) M. What is the hydroxyl ion concentration ? What is the magnitude of K_w ?

At certain temperature the proton concentration of pure water is 2.5 x

1.	At certain temperature the proton concentration of pure water is 2.5 xx10^(-7) M. What is the hydroxyl ion concentration ? What is the magnitude of K_w ?
Answer» Solution :For pure WATER, `[H^+] = [OH^(-)]` Concentration of `[OH^(-) ] = 2.5 XX 10^(-7) M` Ionic product of water `= K_w= [H^+ ][OH^(-)] = (2.5xx10^(-7) M)^2 = 6.25 xx 10^(-14)mol^2 L^(-2)`