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What is molarity of K^(+) in aqueous so...

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

A

`2xx10^(-2)M`

B

`2xx10^(-3)M`

C

`4xx10^(-4)M`

D

`2xx10^(-4)M`

Text Solution

Verified by Experts

`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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Knowledge Check

  • What is minimum concentration of SO_(4)^(2-) required to precipitate BaSO_(4) in solution containing 1 xx 10^(-4) mole of Ba^(2+) ? ( K_(sp) of BaSO_(4) = 4 xx 10^(-10) )

    A
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    B
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    C
    `4xx10^(-6)M`
    D
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