The concentration of hydroxide ion in a water sample is found to be `2.5xx10^(-6)M`. Identify the nature of the solution.

Explanation

The concentration of `OH^(-)` ion in a water sample is found to be `2.5xx10^(-6)M`
`pOH=-log_(10)[OH^(-)]`
`pOH=-log_(10)[2.5xx10^(-6)]`
= `-log_(10)[2.5]-log_(10)[10^(-6)]`
= `-0.3979-(-6)`
= -0.3979 + 6
pOH = 5.6
We know that,
pH + pOH = 14
pH + 5.6 = 14
pH = 14 - 5.6
pH = 8.4
pH = 8.4, shows the nature of the solution is basic.