Which Equation Is NOT Required to Determine the Molar Solubility

question 19

Multiple Choice

Which equation is NOT required to determine the molar solubility of AgCN?

• A)AgCN ⇋ Ag⁺ + CN⁻____________________K_sp = 2.2 × 10⁻¹⁶
• B)H₂O + H₂O ⇋ H₃O⁺ + OH⁻ K_w = 1 × 10⁻¹⁴
• C)[Ag⁺] = [CN⁻] + [HCN]
• D)CN⁻ + H₂O ⇋ HCN + OH⁻ K_b = 1.6 × 10⁻⁵
• E)HCN + H₂O ⇋ CN⁻ + H₃O⁺ K_a = 6.2 × 10⁻¹⁰

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