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Give pK(w)(H(2)O)=6.77 at 40^(@)C, predi...

Give `pK_(w)(H_(2)O)=6.77` at `40^(@)C`, predict the nature of the solution having `pH= 7` at `40^(@)C` ?

A

Basic

B

Acidic

C

Neutral

D

Cannot be predicted

Text Solution

Verified by Experts

The correct Answer is:
A
pH for anetural solution (or pure water) is given as
`pH=(pK_(w))/(2)=(6.77)/(2)=3.39`
Thus, pH above `3.39` implies basic solution while pH below `3.39` implies acidic solultion. Remember, pH scale only at `25^(@)C`.
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