Find the ph of a 0.110 m solution of a weak monoprotic acid having ka= 1.8×10−5.

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08-12-2017
Chemistry

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Find the ph of a 0.110 m solution of a weak monoprotic acid having ka= 1.8×10−5.

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Dariia Dariia · Answer 1 · 2017-12-08T12:28:54+01:00

Dariia Dariia

08-12-2017

If an acid is weak, we can simplify the Ka expression and make the assumption that the concentration of HA at the beginning of the reaction is the same as at the end. And that the concentration of H+ and A- are equal. Therefore:

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