MCQ
If combustion of $4g$ of $CH_4$ liberates $2.5\, kcal$ of heat, the heat of combustion of $CH_4$ is .....$kcal$
- ✓$- 20$
- B$- 10$
- C$2.5$
- D$- 5$
✓
Answer
Correct option: A.
$- 20$
a
$\Delta;H=2.5×164=-10kcalmol$
$\Delta;H=2.5×164=-10kcalmol$
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