Calculate the pH of a 0.20 M solution of KCN at 25.0 ∘C

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  1. Calculate the pH of a 0.20 M solution of KCN at 25.0 ∘C.
    Express the pH numerically using two decimal places.
    ph=

  2. Calculate the pH of a 0.20 M solution of NH4Br at 25.0 ∘C.
    Express the pH numerically using two decimal places.
    ph=

Answer:
Part 1
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Dissociation reaction of KCN is given as follows:

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