1.

The concentration of NaOH solution is 10^(-8)M . Find out the (OH^(-)) concentration

Answer»

`10^(-8)`
Greater than `10^(-6)`
`10^(-6)`
Lies between `10^(-6)` and `10^(-7)`

Solution :Concentrate of `[OH^(-)]` in `NAOH = 10^(-8)` and in `H_(2)O = 10^(-7)`.
Total `[OH^(-)] = 10^(-8) + 10^(-7) = 1.1 XX 10^(-7)`
pOH = 7 - log 1.1
PH = 14-7 + log 1.1
`pH = 7+ log 1.1 gt 7`.


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