Chemistry

Chemistry

Problem

Equal volumes of 0.06 M AgNO3\text{AgNO}_3 and 0.2 M KCN solutions are mixed. KCK_C for the reaction Ag(CN)2−(aq.)⇌Ag+(aq.)+2CN−(aq.)\text{Ag}(\text{CN})_2^-(\text{aq.}) \rightleftharpoons \text{Ag}^+(\text{aq.}) + 2\text{CN}^-(\text{aq.}) is 1.6×10−191.6 \times 10^{-19} at 25°C. The concentration of Ag+(aq.)\text{Ag}^+(\text{aq.}) in solution is : a. 3×10−18M3 \times 10^{-18} M b. 1.5×10−19M1.5 \times 10^{-19} M c. 1.5×10−18M1.5 \times 10^{-18} M d. 3×10−20M3 \times 10^{-20} M

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