If you are given sodium acetate and asked to make a 0.15 M acetate buffer and titrate it to a final pH of 3.7, will you have to add acid, base, or nothing in order to achieve the proper pH? Why?

Question

Tootsie

Chemistry

21 June, 09:25

If you are given sodium acetate and asked to make a 0.15 M acetate buffer and titrate it to a final pH of 3.7, will you have to add acid, base, or nothing in order to achieve the proper pH? Why?

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Answers (1)

Know the Answer?

Francis Savage · Answer 1

We need add acid to prepare 0.15 acetate buffer with pH 3.7.

Explanation:

As we know that buffer solution is the combination of weak acid with strong base or strong acid with weak base.

We know that CH3COOH is weak acid. Acetate buffer is the combination of weak acid CH3COOH and conjucate base CH3COO - (from salt).

So we have to add acid to achieve the proper final pH value of mixture. We need add acid to prepare 0.15 acetate buffer with pH 3.7.