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

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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.

Related Questions:

1. The effective atomic number for [Rh(H₂O)₆]³⁺ (atomic number for Rh is 45) is
2. Primary alcohols can be prepared by the reaction of RMgx with
3. The temperature above which a gas cannot be liquefied is called as
4. Which one of the following is a false statement
5. The molecular geometry of BF₃ is

Topics: P Block Elements in Group 15 (89)
Subject: Chemistry (2512)

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