Exhibit 15-6 Consider an Aqueous 0

question 168

Multiple Choice

Exhibit 15-6 Consider an aqueous 0.25 M solution of NaCN to answer the following question(s) .
-Refer to Exhibit 15-6. What is the base ionization constant, K _b, for CN ^- ?
K _a(HCN) = 4.9×10 ^{- 10}

• A) 4.9×10 ^{- 24}
• B) 1.2×10 ^{- 10}
• C) 2.0×10 ^{- 9}
• D) 2.0×10 ^{- 5}
• E) 4.9×10⁴

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