Molarity and the pH Value of Acid or Alkali by Molarity and the pH Value of Acid or Alkali The table below shows the pH value and the molarity of a strong acid and a weak acid.Molarity of AcidspH valueHydrochloric acidEthanoic Acid0.1 mol dm-31.02.90.01 mol dm-32.03.40.001 mol dm-33.03.90.0001 mol dm-34.04.40.00001 mol dm-35.04.9The table below shows the pH value and the molarity of a strong alkali and a weak alkali.Molarity of alkalipH valueSodium hydroxide solutionAmmonia aqueous0.1 mol dm-313.011.10.01 mol dm-312.010.60.001 mol dm-311.010.10.0001 mol dm-310.09.60.00001 mol dm-39.09.1According to the tables shown above, we can conclude that the pH value of acid or alkali is affected by 2 factors:The MolarityStrong or weak acid(Alkali) Whatsapp Cikgu Kwee now!