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Consider a titration of 20.00mL cyanic acid solution (Ka=3.5x10^-4) with 0.1082 M solution of sodium hydroxide....

Consider a titration of 20.00mL cyanic acid solution (Ka=3.5x10^-4) with 0.1082 M solution of sodium hydroxide. The volume of 21.70 mL of NaOH(aq) was needed to reach the equivalence point. Calculate:

a) the concentration of the cyanic acid solution before the titration

b) the pH of the cyanic acid solution before the titration

c) the pH of the solution at half-equivalence point

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