You are asked to prepare 100 mL of a propanate/propanoic acid buffer with a pH of...

Question

Question

You are asked to prepare 100 mL of a propanate/propanoic acid buffer with a pH of 5.5.

Ka of C2H5COOH=1.34*10^-5

If you used 40 mL of a .1 M C2H5COOH solution, what volume of a .4 M Na C2H5OO solution would you need to prepare the solution?

Answer 1

Answer #1

ANSWER:-

using formula

M₁(C2H5COOH)V₁ (C2H5COOH) = M₂ (C2H5OO ) V₂ (C2H5OO )

0.1 X 40 mL = 0.4 x V₂

V₂ = 10 mL Of (C2H5OO ) needed to prepare 0.4 M Na C2H5OO solution.

Answer 2

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