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Reaction of solid KMnO₄ with conc.H₂SO₄ produces manganese heptoxide (Mn₂O₇) in
Options
(a) solution state
(b) solid state
(c) fine powder
(d) none of these
Correct Answer:
solution state
Explanation:
KMnO₄ on treatment with concentrated H₂SO₄ forms manganese heptoxide via permanganyl sulphate which decomposes explosively on heating. 2KMnO₄ + 3H₂SO₄ → 2KHSO₄ + (MnO₃)₂SO₄ + 2H₂O. (MnO₃)₂SO₄ + H₂O → Mn₂O₇(Red-brown liquid) + H₂SO₄. Mn₂O₇ → 2MnO₂ + 3/2 O₂. Therefore Mn₂O₇ so formed is a red-brown liquid.
Related Questions: - Which of the following is not an actinide
- Which of the following is low boiling liquid
- When chloroform is exposed to light and air, it forms
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Topics: D and F Block Elements
(91)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following is not an actinide
- Which of the following is low boiling liquid
- When chloroform is exposed to light and air, it forms
- How many moles of lead (II) chloride will be formed from a reaction between
- The volume of 0.05 M KMnO₄ solution required to oxidized completely 2.70g
Topics: D and F Block Elements (91)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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