Question

Determine the oh of a solution that is 0.220 m in hco3

Answer 1

Answer : The hydroxide ion concentration of a solution is,
`5* 10^(-14)`

Explanation :

As we know that
`HCO_3^-` dissociates in water to give hydrogen ion
`(H^+)` and carbonate ion
`(CO_3^(2-))`.

As, 1 mole of
`HCO_3^-` dissociates to give 1 mole of hydrogen ion
`(H^+)`

Or, 1 M of
`HCO_3^-` dissociates to give 1 M of hydrogen ion
`(H^+)`

So, 0.200 M of
`HCO_3^-` dissociates to give 0.200 M of hydrogen ion
`(H^+)`

Now we have to calculate the hydroxide ion concentration.

As we know that:

`[H^+][OH^-]=1* 10^(-14)`

`0.200* [OH^-]=1* 10^(-14)`

`[OH^-]=5* 10^(-14)`

Therefore, the hydroxide ion concentration of a solution is,
`5* 10^(-14)`