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A weak acid (50.0 mL) was titrated with ...

A weak acid (50.0 mL) was titrated with 0.1 M NaOH. The pH values when 10.0 mL and 25.0 mL of base have been added are found to be 4.16 and 4.76, respectively. Calculate `K_a` of the acid and pH the equivalence point.

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The correct Answer is:
8.73
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Knowledge Check

  • 100 mL of 0.02M benzoic acid (pK_(a)=4.2) is titrated using 0.02 M NaOH . pH values after 50 mL and 100 mL of NaOH have been added are

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