Select correct statement regarding a sample of water having 100 ppm of `CaCl_(2)` .

Options

A. `Ca^(+2) = 100` pm, `Cl^(-) = 200` pm
B. `Ca^(+2) = 100` pm, `Cl^(-) = 100` pm
C. `Ca^(+2) = 33` pm, `Cl^(-) = 67` pm
D. `Ca^(+2) = 36` pm, `Cl^(-) = 64` pm

Answer

D

Explanation

`CaCl_(2) rarr Ca^(2+) + 2Cl^(-)`
in `10^(6)` gm solution `(100)/(M_(CaCl_(2))^(@)) " "(100)/(M_(CaCl_(2))^(@)) " "(2 xx 100)/(M_(CaCl_(2))^(@))` (Moles)
`[(40 xx 100)/(M_(CaCl_(2)))]g[(2 xx 100)/(M_(CaCl_(2))^(@))][35.5]g`
`square 36 g " "square 64 g`