Given the Two Equilibria Below,
Ag(NH₃)₂⁺(aq) $\rightleftharpoons$ $\leftrightharpoons$ Ag⁺(aq) + 2NH₃(aq); K_d = 5

question 43

Multiple Choice

Given the two equilibria below,
Ag(NH₃) ₂⁺(aq) $\rightleftharpoons$$\leftrightharpoons$ Ag⁺(aq) + 2NH₃(aq) ; K_d = 5.9 × 10^-8
AgCN(s) $\rightleftharpoons$ Ag⁺(aq) + CN?(aq) ; K_sp = $2.2 \times 10 ^ { - 16 }$ what is K for the following equilibrium?
AgCN(s) + 2NH₃(aq) $\rightleftharpoons$ Ag(NH₃) ₂⁺(aq) + CN^-(aq)

• A) \(3.7 \times 10 ^ { - 9 }\)
• B) \(1.3 \times 10 ^ { - 23 }\)
• C) \(2.7 \times 10 ^ { 8 }\)
• D) \(1.4 \times 10 ^ { - 17 }\)
• E) \(2.7 \times 10 ^ { 0 }\)

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Definitions:

Quarterly Compounding

The process of calculating interest on both the initial principal and the accumulated interest over four periods within a year.

Semi-Annually

Occurring twice a year; typically referring to the frequency at which interest is paid or calculated.

Future Value

The amount of money an investment is expected to grow to over a period of time, assuming a specific interest rate.

Rates of Return

The positive or negative financial outcome of an investment over an agreed-upon period, expressed as a percent of the investment's initial outlay.