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2C+O(2)rarr2CO, Delta H= - 220 kJ which ...

`2C+O_(2)rarr2CO, Delta H= - 220 kJ` which of the following statements is correct for this reaction

A

Heat of combustion of carbon is `100 kJ`

B

Reaction is exothermic

C

Reaction needs no initiation

D

All of these are correct

Text Solution

Verified by Experts

The correct Answer is:
B
`2C+O_(2)rarr2CO, DeltaH= -220 kJ`
This reaction does not represents 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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RESONANCE-THERMODYNAMICS-Exercise -1 Part -II Only option correct type
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