Question

What is the pOH of a 0.0072 M solution of sodium hydroxide? pOH=?

Answer 1

pOH of a 0.0072 M=-lg(0.0072) = 2.1426675

Answer 2

Answer : 2.14

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

Given :
`NaOH\rightarrow Na^++OH^-`

1 mole of
`NaOH` gives 1 mole of
`OH^_`

Thus 0.0072 moles of
`NaOH` will give= 0.0072 moles of
`OH^_`

`pOH=-\log [OH^]`

`pOH=-\log (0.0072)`

`pOH=2.14`

Therefore, the pOH of the basic solution is 2.14.