1.

Calculate the pOH of a solution at 25^(@)C that contains 1 xx 10^(-10) M of hydronium ions, i.e., H_(3)O^(+)

Answer»

<P>`7.000`
`4.000`
`9.000`
`1.000`

Solution :Given `H_(3)O^(+)` ion concentration `= 1 xx 10^(-10)`
`pH = -LOG[H^(+)], pH = -log[1 xx 10^(-10)]`,
`pH = + 10 log 10, pH = 10`
We KNOW that, `pH + pOH = 14`....(i)
Put the value of pH in EQ. (i)
`10 + P^(OH) = 14`
`F^(OH) = 4`.


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