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1) Calculate the pH of the following solutions. (a) 0.5M benzoic acid (C6H5COOH, monoprotic weak acid) solution (Ka=6.3105) (b) A solution prepared by mixing 100mL

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1) Calculate the pH of the following solutions. (a) 0.5M benzoic acid (C6H5COOH, monoprotic weak acid) solution (Ka=6.3105) (b) A solution prepared by mixing 100mL of 0.25MHCl solution with 100mL of 0.75MNaOH solution. (c) A buffer solution prepared by mixing 50mL of 0.1MCH3COOH with 50mL of 0.1M CH3COONa(Ka for CH3COOH=1.8105) (d) A buffer solution prepared by mixing 50mL of 0.1M ammonia (NH3) solution with 35mL of 0.1MHCl solution (Kb for NH3=1.8105) 1) Calculate the pH of the following solutions. (a) 0.5M benzoic acid (C6H5COOH, monoprotic weak acid) solution (Ka=6.3105) (b) A solution prepared by mixing 100mL of 0.25MHCl solution with 100mL of 0.75MNaOH solution. (c) A buffer solution prepared by mixing 50mL of 0.1MCH3COOH with 50mL of 0.1M CH3COONa(Ka for CH3COOH=1.8105) (d) A buffer solution prepared by mixing 50mL of 0.1M ammonia (NH3) solution with 35mL of 0.1MHCl solution (Kb for NH3=1.8105)

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