Question

What is the concentration of k+ ions in a 0.045 m k2co3 solution assuming complete dissociation?express the concentration in molarity?

Answer 1

Answer: The concentration of
`K^+` ions in the solution is 0.09 M

Step-by-step explanation:

We are given:

Concentration of
`K_2CO_3` = 0.045 M

The chemical equation for complete dissociation of potassium carbonate follows:

`K_2CO_3(aq.)\rightarrow 2K^+(aq.)+CO_3^(2-)(aq.)`

By stoichiometry of the reaction:

1 mole of potassium carbonate produces 2 moles of potassium ions and 1 mole of carbonate ions.

So, the concentration of potassium ions in the given solution =
`(2* 0.045M)=0.09M`

Hence, the concentration of
`K^+` ions in the solution is 0.09 M