Qualitative Analysis - Result Question 15

####15. A gas X is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of a colourless gas Y. Identify X and Y.

(2002, 3M)

(a) X=CO2,Y=Cl2

(b) X=Cl2,Y=CO2

(c) X=Cl2,Y=H2

(d) X=H2,Y=Cl2

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Solution:

  1. Cl2X+H2OHCl+HOCl

HCl+AgNO3AgCl (white) +HNO3

2HCl+MgMgCl2+H2(g)



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