1.

What is molarity of K^(+)in aqueous solution that contains 17.4 ppm of K_(2)SIO_(4)(174g"mol"^(-1))?

Answer»

`2xx10^(-2)M`
`2xx10^(-3)M`
`4xx10^(-4)M`
`2xx10^(-4)M`

SOLUTION :`17.4` ppm MEANS.
`implies17.4` gm per `10^(6)` parts
`implies17.4` mg per `10^(6)mg` water i.e. 1 L water.
`M=2xx(17.4xx10^(-3))/174xx1/1=2xx10^(-4)`


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