3
Объяснение:
Ka (CH3COOH) = (c(CH3COOH) * a^2) / 1 - a = 0.1 * 0.01^2 / 1 - 0.01 = 1 * 10^-5;
[H^+] = = 0,001 моль/л;
pH = -lg([H^+]) = -lg(0.001) = 3
3
Объяснение:
Ka (CH3COOH) = (c(CH3COOH) * a^2) / 1 - a = 0.1 * 0.01^2 / 1 - 0.01 = 1 * 10^-5;
[H^+] =
= 0,001 моль/л;
pH = -lg([H^+]) = -lg(0.001) = 3