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What is the pH for a neutral solutions a...

What is the pH for a neutral solutions at the normal temperature of the human body

A

`7.2`

B

`14.0`

C

`6.8`

D

`6.0`

Text Solution

Verified by Experts

The correct Answer is:
C
At room temperature `K_(w)` for water = `1 xx 10^(-14)` .So pH at `25^(@)C = 7 `
At human body temperature `( approx 37^(@)C)` the `K_(w)` for water will slightly increase so pH will slightly decrease to say 6.8 .
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