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Chemistry · Organic chemistry – some basic principles and techniques

हिन्दी

On complete combustion, 0.246 g of an organic compound containing only C, H, and O gave 0.198 g of \( \text{CO}_2 \) and 0.1014 g of \( \text{H}_2\text{O} \). What is the molar ratio of carbon to hydrogen (\( \text{C} : \text{H} \)) in the compound?

  1. A
    1 : 2
  2. B
    2 : 5
  3. C
    2 : 3
  4. D
    3 : 8
View Answer & Solution

Correct answer · Option B

2 : 5

Explanation

Moles of \( \text{C} = \frac{0.198}{44} = 0.0045\text{ mol} \); moles of \( \text{H} = \frac{2 \times 0.1014}{18} = 0.01127\text{ mol} \). The ratio \( \text{C} : \text{H} = 0.0045 : 0.01127 \approx 1 : 2.5 = 2 : 5 \).
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