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0.765 gm of acid gives 0.55 g of CO₂ and 0.12 g of H₂O.Then find the ratio of the percentage of carbon and hydrogen
Options
(a) 19 : 2
(b) 18 : 11
(c) 20 : 1.7
(d) 1 : 7
Correct Answer:
20 : 1.7
Explanation:
44g of CO₂ contains 12 g carbon. Therefore 0.55 g of CO₂ contains 12/44×0.55 , 0.15 g carbon. 18 g of H₂O contains 2 g hydrogen, Therefore 0.12g of H₂O contains 2/18×0.12, 0.013 g hydrogen. Percentage of carbon = 0.15/0.765×100=19.6=w. Percentage of hydrogen = 0.013/0.765×100=1.7. Ratio of percentage of C and H is 20 : 1.7.
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Topics: Basic Principles of Organic Chemistry
(124)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following compounds shows evidence of the strongest hydrogen bond
- When ethanol is subjected to dehydration in presence of H₂SO₄, the
- Bleaching powder is obtained by treating chloride with
- The percentage strength (in g litre⁻¹) of 10 mL of 20 vol.solution of H₂O₂ is
- If heat of formation of C + O₂ → 2CO is ΔH = -110.5 kcal,then heat of combustion
Topics: Basic Principles of Organic Chemistry (124)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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