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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: - High ionisation energy indicates that
- The oxidation states of S atoms in S₄O₆²⁻ from left to right respectively
- The total number of isomeric alcohols with the molecular formula C₄H₉OH is
- The maximum valency of an element with atomic number 7 is
- The total number of electrons present in all the p-orbitals of bromine is
Topics: P Block Elements in Group 15
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- High ionisation energy indicates that
- The oxidation states of S atoms in S₄O₆²⁻ from left to right respectively
- The total number of isomeric alcohols with the molecular formula C₄H₉OH is
- The maximum valency of an element with atomic number 7 is
- The total number of electrons present in all the p-orbitals of bromine is
Topics: P Block Elements in Group 15 (89)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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