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Determine the pH of a buffer that is prepared by mixing 100 mL of 0.2 M NaOH and 150 mL of 0.4 M acetic acid assuming the volume is additive. Calculate the pH of the solution when 0.5 mL of 1 M of HCl was added hence calculate the buffer capacity.(Given:pKa of acetic acid = 4.76 at 25C

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6,1 molperdm3

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