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pH of solution

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Weak acid - strong base
50.0ml of 0.20 M HCOOH ( Ka = 1.8 x 10^-4) with 0.1 M NaOH

A) what volume of NaOH will be added at equilibrium ?

B) what is the initial pH ?

C) between initial and equivalence point
D) at equivalence point
E) beyond equivalence point
F) what happens exactly halfway to the equivalence point ?

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It investigates the pH of the solution. The solution is detailed and well presented.

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