Question: help please 49. (a) a Hypochlorous acid, HOCI, is a monoprotic acid. An aqueous solution of 0.028 M HOCI has a pH of 4.5. Calculate

help please 49. (a) a Hypochlorous acid, HOCI, is a monoprotic

help please

49. (a) a Hypochlorous acid, HOCI, is a monoprotic acid. An aqueous solution of 0.028 M HOCI has a pH of 4.5. Calculate the Ka value for this acid. A buffer solution is prepared by mixing 100 mL of 0.04 M HOCI with 100 mL of 0.02 M NaOCI. Calculate the pH of the solution. Explain how a mixture of HOCI and sodium hypochlorite, NaOCI, solution behaves as a buffer solution when a small amount of strong acid is added. (b) The solubility product, Ksp for calcium sulphate, CaSO4, is 2.0 x 105 at 25C. Calculate the molar solubility of CaSO4 in water and in 0.10 M sodium sulphate, Na2SO4. State common ion effect on the solubility of CaSO4

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