47. Solving a chemistry problem
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67. Buffer solution was prepared by mixing 30.0 ml of 0.5 M acetic acid solution and 20.0 ml of 0.5 M sodium acetate solution. To the resulting solution was added 20.0 ml of 0.1 M sulfuric acid solution. Calculate the buffering capacity of the stock solution and the change in pH when a strong acid is added.
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