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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.
Related Questions: - The work done during the expansion of a gas from a volume of 4 dm³ to 6 dm³
- Kinetic energy of one mole of an ideal gas at 300 K is
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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
- The work done during the expansion of a gas from a volume of 4 dm³ to 6 dm³
- Kinetic energy of one mole of an ideal gas at 300 K is
- If concentration of reactants is increased by ‘x’,then the K becomes
- In the laboratory, manganese(II) salt is oxidised to permanganate ion in aqueous
- Which one of the following compounds on nitration easily produces nitro derivative
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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