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When conc. H₂SO₄ is added to dry KNO₃, brown fumes are evolved. These fumes are of
Options
(a) SO₂
(b) SO₃
(c) NO
(d) NO₂
Correct Answer:
NO₂
Explanation:
When heated with conc. H₂SO₄ potassium nitrate undergoes double decomposition reaction forming free nitric acid. Some of the nitric acid gets decomposed to give brown fumes of nitrogen dioxide. KNO₃ + H₂SO₄ → KHSO₄ + HNO₃. 4HNO₃ → 4NO₂ + 2H₂O + O₂.
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Topics: P Block Elements in Group 15
(89)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following liquid pairs will exhibit a positive deviation from
- The smell of agarbati, mixed in the atmosphere , is due to
- The first fractional product of petroleum from top to bottom is
- Among the following pairs of ions, the lower oxidation state in aqueous solution
- Chloride ion and potassium ion are isoelectronic. Then
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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