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Hydronium Ion

at a certain ...

Question

at a certain temperature the value of pkw is 13.4 and the measured pH of solution is 7. solution is basic why?

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Solution

Dear Student

At any temperature, pKw = pH + pOH
But we know that for water pH = pOH
So, in this case (at that certain temperature) pH of water is 13.4/2 = 6.7
This means, pH = 6.7 is neutral, below this will be acidic and above will be basic.
Hence pH = 7 is basic.

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