Question

In the following chemical reactions, identify X and Y.
$H_{2}S+C{l}_2\to 2HCl+X$
2Pb$(N{O}_3{)}_2\to 2PbO+4N{O}_2+Y$

• A. X = $O_2$; Y = S
• B. X = $H_2$; Y = $N_2$
• C. X = S; Y = $O_2$
• D. X = $C{l}_2$; Y = $O_2$

Answer 1

The correct option is C X = S; Y = $O_2$

When hydrogen sulphide gas reacts with chlorine gas, it produces sulphur, which is a solid substance, and hydrogen chloride gas.
$H_{2}S+C{l}_2\to 2HCl+S$
When lead nitrate is heated, it breaks into lead monoxide, nitrogen dioxide (a reddish-brown gas), and oxygen.
$2Pb(N{O}_3{)}_2\to 2PbO+4N{O}_2+O_2$