Solid KCN Is Added to a Solution Composed of 0

question 76

Multiple Choice

Solid KCN is added to a solution composed of 0.10 M Ag⁺ and 0.10 M Zn²⁺ just until a precipitate forms.What is the composition of this initial precipitate? AgCN K_sp = 2.2 × 10^-16 and Zn(CN) ₂ K_sp = 3 × 10^-16.

• A)The precipitate is pure AgCN(s).
• B)The precipitateis pure Zn(CN)₂(s).
• C)The precipitate is a mixture of AgCN(s)and Zn(CN)₂(s).
• D)The precipitate is a mixture of KCN(s)and AgCN(s).
• E)The precipitate is a mixture of KCN(s)and Zn(CN)₂(s).

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Definitions:

Two-Column Journal

A fundamental accounting record with two columns used for debits and credits to record financial transactions.

Debit

An accounting entry that increases an asset or expense account, or decreases a liability or equity account. It is positioned on the left side of an account ledger.

Credit

An accounting entry that increases the balance of liabilities and equity accounts or decreases the balance of an asset or expense account.

Horizontal Analysis

A financial analysis technique that evaluates the changes in the amounts of financial statement items over a period.