could someone help me please. I am struggling with buffers. Practice Exercise 16

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could someone help me please. I am struggling with buffers.

Practice Exercise 16.35 One liter of buffer is made by dissolving 140.7 grams of acetic acid, HC2H302, and 140.7 grams of sodium acetate, NaCH02, in enough water to make one liter. What is the pH of this solution? For acetic acid, HC2H302, K, 1.8 x 10s. pH- the tolerance is +/-590 Click if you would like to Show Work for this question: Open Show Work By accessing this Question Assistance, you will learn while you earn points based on the Point Potential Policy set by your instructor. Question Attempts: 0 of 3 used SAVE FOR LATER SUBMIT ANSWER Earn Maximum Points available only if you 0 answer this question correctly in your first attempt /assignment/test/aglisturiid asnmt2 1 95860#N10066

Explanation / Answer

mass of CH3COOH = 140.7 g

moles of CH3COOH = 140.7 / 60.05 = 2.343 mol

moles of sodium acetate = 140.7 / 82.03 = 1.715 mol

pH = pKa + log [salt / acid]

    = 4.74 + log [1.715 / 2.343]

pH = 4.60

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