Exhibit 15-5 Consider Solving for the PH of a 0

question 43

Multiple Choice

Exhibit 15-5 Consider solving for the pH of a 0.300 M aqueous solution of KCN to answer the following question(s) .
-Refer to Exhibit 15-5. What is the [OH ^- ] ion concentration in this 0.300 M KCN aqueous solution?

• A) [OH ^- ] = 1.4×10 ^{- 12} M
• B) [OH ^- ] = 2.3×10 ^{- 11} M
• C) [OH ^- ] = 2.2×10 ^{- 3} M
• D) [OH ^- ] = 0.300 M
• E) [OH ^- ] = 1.4×10² M

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