Question
Asked Nov 21, 2019
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Calculate the pH at 25

°

C of a 0.035 M solution of a weak acid that has Ka = 1.7

×

10−5.

 

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Expert Answer

Step 1

Given:

Ka = 1.7×10−5.

Weak acid [HA] = 0.035 M.

Step 2

Chemical reaction is given by:

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H3 0+ + A HA H20

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Step 3

Equilibrium concentrati...

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H3O* НА A- Initial 0.035 0 0 Change +x +x -X Equilibrium 0.035-x X X

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