1.

Hydrogen ion concentration of an aqueous solution is 1 xx 10^(-8) M. The solution is diluted with equal volume of water. Hydroxyl ion concentration of the resultant solution in terms of mol dm^(-3) is

Answer»

`1 xx 10^(-8)`
`1 xx 10^(-6)`
`2 xx 10^(-10)`
`0.5 xx 10^(-10)`

SOLUTION :`[OH^(-)]` of aqueous solution `=(1xx10^(-14))/(1 xx 10^(-4))`
`=1 xx 10^(-10)M`
When the solution is diluted by adding EQUAL volume of water, then concentration of the `OH^(-)` ions is HALVED.
`i.e., (1)/(2) xx 1xx 10^(-10) =0.5 xx 10^(-10) M`


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