What is the molar solubility of AgCl in 0. 10 mol L^-1 NaCN if the colourless complex ion Ag(CN)₂^- forms? K_sp for AgCl is 1.8 × 10^-10 and K_f for Ag(CN)₂^- is 1.0 × 10²¹. A) 0. 050 mol L^-1 B) 0. 10 mol L^-1 C) 0.20 mol L^-1 D) 0.40 mol L^-1

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The correct answer is A because the molar solubility of AgCl in 0.10 mol L-1 NaCN is 0.050 mol L-1. This is because the formation of the colourless complex ion Ag(CN)2- decreases the concentration of free Ag+ ions in solution, which in turn decreases the solubility of AgCl.

What Is the Molar Solubility of AgCl in 0