1.

If the pH value is 4.5 for a solution then what is the value of H^(+) concentration

Answer»

`3.162 XX 10^(-5)` mol/L
`31.62 xx 10^(-5)` mol/L
`0.3162 xx 10^(-5)` mol/L
`3.162 xx 10^(-8)` mol/L

Solution :`[H^(+)] = 10^(-pH)`
`= 10^(-4.5) mol//K, = 10^(0.5) xx 10^(-5)`
`= sqrt(10) xx 10^(-5)`
`3.162 xx 10^(-5) mol//L`.


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