Question

What is the molar concentration of potassium ions in a 0.250 m k2so4 solution?

Answer 1

Answer : The molar concentration of
`K^+` ion is, 0.5 M

Explanation :

The dissociation reaction of
`K_2SO_4` is,

`K_2SO_4(aq)\rightarrow 2K^+(aq)+SO_4^(2-)(aq)`

By the stoichiometry we can say that, 1 mole of
`K_2SO_4` dissociates into 2 mole of
`K^+` ions and 1 mole of
`SO_4^(2-)` ions.

As we are given the concentration of
`K_2SO_4` is, 0.250 M.

So, the molar concentration of
`K^+` ion =
`2* 0.250=0.5M`

The molar concentration of
`SO_4^(2-)` ion = 0.250 M

Therefore, the molar concentration of
`K^+` ion is, 0.5 M