Question

The pOH of an aqueous solution at 25°C was found to be 2.40. The pH of this solution is The hydronium ion concentration is The hydroxide ion concentration is TEM. Submit Answer Retry Entire Group 9 more group attempts rema

Answer 1

The hydroxide ion concentration is 0.003981 M.

The hydronium ion concentration is
`2.5119* 10^(-12) M`.

Step-by-step explanation:

The pOH of an aqueous solution at 25°C = 2.40

`pOH=-\log[OH^-]`

`2.40=-\log[OH^-]`

`[OH^-]=0.003981 M`

The hydroxide ion concentration is 0.003981 M.

The pH of an aqueous solution at 25°C = ?

The relationship between pH and pOH :

pH + pOH = 14

`pH=14- pOh = 14-2.40 =11.6`

`pH=-\log[H_3O^+]`

`11.6=-\log[H_3O^+]`

`[H_3O+]=2.5119* 10^(-12) M`

The hydronium ion concentration is
`2.5119* 10^(-12) M`.