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Benzoic acid C6H5COOH is a weak acid with Ka=6.3 X 10^-5
C6H5CO2H(aq) + H2O(l)<---> H3O^+(aq) + C6H5CO2^-(aq)
a) Calculate the pH of a 0.150 M benzoic acid solution. Show allcalulations.
b) Suppose 1.44g of sodium benzoate, Na^+C6H5COO-, is added to100.0 mL of the 0.150 M benzioic acid solution. Calculate the pH ofthe resulting buffer solution assuming the volume of the solutiondoes not change on addition of the solid.
Benzoic acid C6H5COOH is a weak acid with Ka=6.3 X 10^-5
C6H5CO2H(aq) + H2O(l)<---> H3O^+(aq) + C6H5CO2^-(aq)
a) Calculate the pH of a 0.150 M benzoic acid solution. Show allcalulations.
b) Suppose 1.44g of sodium benzoate, Na^+C6H5COO-, is added to100.0 mL of the 0.150 M benzioic acid solution. Calculate the pH ofthe resulting buffer solution assuming the volume of the solutiondoes not change on addition of the solid.
C6H5CO2H(aq) + H2O(l)<---> H3O^+(aq) + C6H5CO2^-(aq)
a) Calculate the pH of a 0.150 M benzoic acid solution. Show allcalulations.
b) Suppose 1.44g of sodium benzoate, Na^+C6H5COO-, is added to100.0 mL of the 0.150 M benzioic acid solution. Calculate the pH ofthe resulting buffer solution assuming the volume of the solutiondoes not change on addition of the solid.
Beverley SmithLv2
29 Sep 2019
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