MCQ
$2C + {O_2} \to 2CO;\,\,\Delta H = - 220\,kJ$ Which of the following statement is correct for this reaction
- AHeat of combustion of carbon is $110 \,kJ$
- ✓Reaction is exothermic
- CReaction needs no initiation
- DAll of these are correct
✓
Answer
Correct option: B.
Reaction is exothermic
(b)$2C + {O_2} \to 2CO$; $\Delta H = - 220\,KJ$
This reaction does not represent complete combustion of carbon, hence heat of combustion of carbon will not be equal to $110\,kJ$. The negative sign of $\Delta H$ indicates that this reaction is exothermic. Also, despite being spontaneous reaction, it requires initiation.
This reaction does not represent complete combustion of carbon, hence heat of combustion of carbon will not be equal to $110\,kJ$. The negative sign of $\Delta H$ indicates that this reaction is exothermic. Also, despite being spontaneous reaction, it requires initiation.
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