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The Ka of acetic acid (CH3CO2H) is 1.8 × 10–5. What is the pH of a...

The Ka of acetic acid (CH3CO2H) is 1.8 × 10–5. What is the pH of a solution that is made up by dissolving 0.45 moles of sodium acetate (CH3CO2Na) and 0.250 moles of acetic acid (CH3CO2H) in enough water to make 1 L of solution?

1.80
4.74
5.00
6.12
7.33
4.48
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Answer #1

Thus, option 3,    pH = 5

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