Which Solution Below Would Be the Best Choice for Preparing

question 48

Multiple Choice

Which solution below would be the best choice for preparing a buffer with a pH=8.0?

• A)formic acid and sodium formate, K_a =1.8 * 10^-4
• B)acetic acid and sodium acetate, K_a = 1.8 *10^-5
• C)hypochlorous acid and sodium hypochlorite, K_a = 3.5 *10^-8
• D)boric acid and sodium borate, K_a =5.8 *10^-10
• E)All of these solutions would be equally good choices for making this buffer.

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