Answer: When an aqueous solution of KCN is added to a
Chapter 19, Problem 19.32(choose chapter or problem)
When an aqueous solution of KCN is added to a solution containing Ni21 ions, a precipitate forms, which redissolves upon addition of more KCN solution. No precipitate forms when H2S is bubbled into this solution. Write reactions describing what happens in this solution. [Hint: CN2 is a BrnstedLowry base (Kb < 1025) and a Lewis base.]
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