Analytical Chemistry Question 138
Question: 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 colorless 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 $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] $ \underset{(X)}{\mathop{Cl_2}}+H_2O\to HOCl+HCl $
$ AgNO_3+HCl\to \underset{whiteppt}{\mathop{AgCl}}+HNO_3 $
$ Mg+2HCl\to MgCl_2+\underset{(Y)}{\mathop{H_2}}\uparrow $
BETA
