First slide
Salt hydrolysis :

Regarding aqueous solution of Potassium Cyanide, correct statements are

A) Solution is alkaline in nature                                           B)  It undergoes anionic hydrolysis  

C) It remains colourless by the addition of Phenolpthalein      D) Its hydrolysis constant depends on Ka of  weak acid


CN-+H2O  HCN+OH-; Undergoes anionic hydrolysis and the solution is alkaline; Thus it gives pink colour with Phenolpthalein; Kh=KwKa

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