Pure Water Has a PH of 7

question 19

Multiple Choice

Pure water has a pH of 7. The inside of a cell is also about pH 7. This might be so because

• A)buffers work best when the pH is close to 7.
• B)humans are largely made up of water by weight.
• C)most of the chemical reactions that occur in humans can proceed optimally at pH 7.
• D)ionic bonds cannot form at pH 7.

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