If the K_b of a Certain Amine Is 4

question 65

Multiple Choice

If the K_b of a certain amine is 4.50 × 10^-4, what is the approximate ratio of the protonated to the unprotonated amine, respectively, at pH 7.00? Assume the following reaction. RNH₂ (aq) + H₂O(l) RNH₃⁺(aq) + OH^-(aq)

• A) 4500 : 1
• B) 1 : 4500
• C) 45 : 1
• D) 1 : 45

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