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At 20^@C water has Kw=6.807xx10^(-15).Wh...

At `20^@C` water has `K_w=6.807xx10^(-15)`.What is the pH of pure water at this temperature ?

A

6.667

B

`6.920`

C

`7.000`

D

`7.084`

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The correct Answer is:
d
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