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Answer in General Chemistry for sameera abrahimi #156748

Author:
March 17th, 2023

Calculate the pH of the resulting solution made by adding 2 moles of of KCN(aq) into 3 L of water.

Concentration of KCN = 2 mol / 3 L .

In This Case Anionic hydrolysis So ,

PH = 7 + PK / 2 + log C / 2 .

= 7 + 9.2 / 2 + log 0.33

= 7 + 4.6 + ( – 0.4814 )

= 11.6 – 0.4814 = 11.6 – 0.5 = 11.1 Answer .

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