State what is the absolute error in pka according to pka

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Reference no: EM13166115

It takes15.8mL of 0.10M NaOH standard solution to reach an equivalence point for a titration of 20.00 mL of a weak monoprotic acid,

(1) What is molarity of this acid?

(2) The initial pH of the acid before adding any base was 3.48. What is Ka value of this acid?

(3) What is % Inozation of the acid at the beginning?

(4) What is pKa value of this acid?

(5) If the true value of the pKa is 6.07. What is the absolute error?

(6) What is the relative % error in measured pKa value?

(7) pH value at the mid-point (half-way point) to the equivalence point found to be 5.72. What is pKa according to this mid point pH value?

(8) What is the absolute error in pKa according to pKa from the mid-point pH value? The true value is given in # (5)

(9) What is the relative % error in pKa according to pKa from the mid-point pH value?

Reference no: EM13166115

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