1.

Which of the following solution contains same molar concentration?A. `166 g. KI//L` solution.B. `33.0 g (NH_(4))_(2) SO_(4)` in `200 mL` solutionC. `25.0 g CuSO_(4).5H_(2) O` in `100 mL` solutionD. `27.0 mg Al^(3+)` per `mL` solution.

Answer» Correct Answer - A::C::D
`[{:(Mw "of" KI (NH_(4))_(2) SO_(4) CuSO_(4) 5H_(2) "and"),(Al^(2+) "respectively are" 166 132 250 "and"),(27 g mol^(-1)):}]`
a. `M = (166 xx 1000)/(166 xx 1000) = 1.0 M`
b. `M = (33 xx 1000)/(132 xx 200) = 1.25 M`
c. `M = (25 xx 1000)/(250 xx 100) = 1.0 M`
d. `M = (27 xx 10^(-3) xx 1000)/(27 xx 1) = 1.0 M`


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