pH = pKa + log[base]/[salt] = -log (5.6 * 10^-10) + log 0.17/0.27 = 9.2518 - 0.2 = 9.05 Solution pH = pKa + log[base]/[salt] = -log (5.6 * 10^-10) + log 0.17/0.27 = 9.2518 - 0.2 = 9.05.Read less