Question

Study the given diagram carefully and identify $X$ and $Y$ respectively.

• A. Conc. $HCl,C{O}_2$
• B. Conc. $H_{2}S{O}_4,HCl$
• C. Conc. $HN{O}_3,H_2$
• D. Conc. $NaOH,C{l}_2$

Answer 1

The correct option is B Conc. $H_{2}S{O}_4,HCl$

Reacting sodium chloride (salt) and sulfuric acid at elevated temperatures to produce sodium bisulfate and hydrogen chloride gas.
$NaCl\left(s\right)+H_{2}S{O}_4\left(l\right)\to HCl\left(g\right)+NaHS{O}_4\left(s\right)$
(Sodium bisulfate, also sodium hydrogen sulfate)
The reaction can also yield $N{a}_{2}S{O}_4$ but Sodium sulfate reacts with an equivalent amount of sulfuric acid to give an equilibrium concentration of the acid salt sodium bisulfate.