Q13 / 160 · TS EAMCET 2023 (14 May Shift 1) · Chemistry

Aluminium reacts with dilute $\mathrm{HCl}$ and liberates a gas 'A' and with aqueous alkali liberates a gas 'B'. A and B respectively are

  • A
    $\mathrm{Cl}_2, \mathrm{O}_2$
  • B
    $\mathrm{O}_2, \mathrm{O}_2$
  • C
    $\mathrm{Cl}_2, \mathrm{H}_2$
  • Correct answer
    D
    $\mathrm{H}_2, \mathrm{H}_2$

Solution

When aluminium is treated with dilute hydrochloric acid, it forms aluminium chloride with release of hydrogen gas. $$ \underset{\text { Aluminium }}{2 \mathrm{Al}_{(\mathrm{s})}}+\underset{\text { Hydrochloric acid }}{6 \mathrm{HCl}_{(\mathrm{aq})}} \quad \longrightarrow \underset{\text { Aluminium chloride }}{2 \mathrm{AlCl}_{3(\mathrm{aq})}} \quad+\underset{\text { Hydrogen }}{3 \mathrm{H}_2 \uparrow} $$

Hence, the correct answer is option: 'D'.

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