Navigate

Which of the following is used to prepare Cl₂ gas at room temperature from

Which of the following is used to prepare Cl₂ gas at room temperature from concentrated HCl

Options

(a) MnO₂
(b) H₂S
(c) KMnO₄
(d) Cr₂O₃

Correct Answer:

KMnO₄

Explanation:

KMnO₄ oxidised halogen acids to halogen. 2KMnO₄ + 3H₂SO₄ → K₂SO₄ + 2MnSO₄ + 3H₂O + 5O, [2HCl + O → H₂O + Cl₂] * 5. 2KMnO₄ + 3H₂SO₄ + 10HCl → K₂SO₄ + 2MnSO₄ + 8H₂O + 5Cl₂.

Therefore KMnO₄ is used to prepare Cl₂ from concentrated HCl.

UP2011
admin:

Related Questions

  1. If glycerol is heated with oxalic acid at certain temperature,it gives an acid
  2. Identify the gas which is readily adsorbed by activated charcoal
  3. Which one of the following is tridentate ligand
  4. Which is a metalloid
  5. For alkali metals, which one of the following trends is incorrect