Question

Which of the following produces $\text{C}{{\text{l}}_{2}}$ gas?

• A. $\text{NaCl}\,\text{+}\,\text{HN}{{\text{O}}_{\text{3}}}$
• B. $\text{Mn}{{\text{O}}_{\text{2}}}\text{+}\,\text{HCl}$
• C. $\text{KMn}{{\text{O}}_{\text{4}}}\text{+}\,\text{HCl}$
• D. $\text{HCl}\,\text{+}\,\text{HN}{{\text{O}}_{\text{3}}}$

Answer 1

Answer: (B)

$\text{Mn}{{\text{O}}_{\text{2}}}\text{+}\,\text{HCl}$

Answer 2

Scheele discovered chlorine by oxidizing hydrochloric acid with manganese dioxide
$4HCl+Mn{{O}_{2}}\xrightarrow{{}}2C{{l}_{2}}+MnC{{l}_{2}}+2{{H}_{2}}O$