Question

Calculate the hydroxide ion concentration in an aqueous solution with a poh of 9.85 at 25°c.

Answer 1

Answer: The hydroxide ion concentration in aqueous solution is
`1.412* 10^(-10)M`

Step-by-step explanation:

To calculate the hydroxide ion concentration, we use the equation:

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

We are given:

pOH = 9.85

Putting values in above equation, we get:

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

`[OH^-]=10^(-9.85)=1.412* 10^(-10)M`

Hence, the hydroxide ion concentration in aqueous solution is
`1.412* 10^(-10)M`

Answer 2

The hydrogen ion concentration is calculated as follows

Ph + POh =14
ph= 14-9.85= 4.15

anti -H+

=anti (-4.15) = 7.07 x10^-5 moles per liter