Chemistry, asked by puja37555, 1 month ago

An acid-base indicator which is a weak acid has a pKa value = 5.5. At what concentration ratio of sodium acetate to acetic acid would the indicator show a colour half-way between those of it's acid and conjugate base forms? [pKa of acetic acid = 4.75]
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Answers

Answered by archananagavekar612
1

Explanation:

pH=5.45, pKa=4.75

pH=pK

a

+log

Aceticacid

(sodiumacetateion)

5.45=4.75+log

acid

base

(Aceticacid)

(sodiumacetateion)

=10

0.7

=5:1

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