If ionic product of water is $K_{w} = 10^{- 16}$ at $4^{o} C$ , then a solution with $p H = 7.5$ at $4^{o} C$ will _________.

turn blue litmus red

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turn red litmus blue

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be neutral to litmus

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be alkaline

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Solution

The correct option is A turn blue litmus red
Explanation:
According to the given conditions, $K_{w} = 10^{- 16}$

Then the solution will be neutral at $p H = 8$

If given $p H = 7.5$ then it is an acidic solution and in acidic solution litmus paper turn blue colour to red colour.

So, Option A is correct answer.

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If ionic product of water is Kw=10−16 at 4oC, then a solution with pH=7.5 at 4oC will _________.

The correct option is A turn blue litmus redExplanation:According to the given conditions, Kw=10−16Then the solution will be neutral at pH=8If given pH=7.5 then it is an acidic solution and in acidic solution litmus paper turn blue colour to red colour.So, Option A is correct answer.

If ionic product of water is $K_{w} = 10^{- 16}$ at $4^{o} C$ , then a solution with $p H = 7.5$ at $4^{o} C$ will _________.