What is the molartiy of `SO_(4)^(2-)`om in aqueous solution that contain `34.2 "ppm" ` of `Al_(2)(SO_(4))_(3)` ? (Assume complete dissocaiation and density of solution `1 g //mL`)

Options

A. `3xx10^(-4) M`
B. `2xx10^(-4)`
C. `10^(-4)M`
D. None of these

Answer

A