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Question:
Number of hydrogen atoms per molecule of a hydrocarbon A having $858 \%$ carbon is_____ (Given: Molar mass of $A =84 g mol ^{-1}$ )
Number of hydrogen atoms per molecule of a hydrocarbon A having $858 \%$ carbon is_____ (Given: Molar mass of $A =84 g mol ^{-1}$ )
Updated On: Nov 27, 2024
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Correct Answer: 12
Solution and Explanation
The correct answer is 12.
Empirical formula (CH2)
14×n=84
n=6
∴ Molecular formula C6H12
| Element | Percentage | Mole | Mole ratio |
| C | 85.8 | \(\frac{85.8}{12}=7.5\) | 1 |
| H | 14.2 | \(\frac{14.2}{1}=14.2\) | 2 |
14×n=84
n=6
∴ Molecular formula C6H12
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