Category Archives: Chemistry

Calculating the pH of an acid using Ka and acid concentration

Calculate the pH of 500ml of 1M hydrazoic acid. Ka=2.5x10^-5? Calculating the pH isn't too tough, and I'm happy to help with any questions you may have. Just comment below. Start with the dissociation equation, HA <=> [H+][A-], meaning that Ka = [H+][A-]/[HA]. If we have 1 molar hydrazoic acid, then how much will dissociate?… Read More »