A gas 'X' is passed through water to form a solution. The aqeous solution on treatment with `AgNO_(3)` solution gives a white precipitate. The sturated aqueous solution also dissolves magnesium ribbon with the evolution of colourless gas 'Y'. Identify 'X' and 'Y'

Options

A. `X = CO_(2), Y = Cl_(2)`
B. `X = Cl_(2), Y = CO_(2)`
C. `X = Cl_(2), Y = H_(2)`
D. `X = H_(2), Y = Cl_(2)`

Answer

C

Explanation

`underset((X))Cl_(2) + H_(2)O rarr HOCl + HCl`
`AgNO_(3) + HCl rarr underset(("White ppt"))(AgCl) + HNO_(3)`
`Mg + underset((X))(Cl_(2)) rarr MgCl_(2) + underset((Y))(H_(2))`