Which of the Following Would Be the Best Choice for Preparing

question 74

Multiple Choice

Which of the following would be the best choice for preparing a buffer with a pH  3.5?

• A)a solution of formic acid and sodium formate, K_a  1.8  10 ^{ 4}
• B)a solution of acetic acid and sodium acetate, K_a  1.8  10 ^{ 5}
• C)a solution of hypochlorous acid and sodium hypochlorite, K_a  3.5  10 ^{ 8}
• D)a solution of 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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Waste that poses substantial or potential threats to public health or the environment due to its toxicity, chemical reactivity, flammability, or other characteristics.

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