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Question: \(2C + O_{2} \rightarrow 2CO;\Delta H = - 220kJ\)Which of the following statement is correct for thi...

2C+O2→2CO;ΔH=−220kJ2C + O_{2} \rightarrow 2CO;\Delta H = - 220kJWhich of the following statement is correct for this reaction`

A

Heat of combustion of carbon is 110 kJ

B

Reaction is exothermic

C

Reaction needs no initiation

D

All of these are correct

Answer

Reaction is exothermic

Explanation

Solution

2C+O2→2CO2C + O_{2} \rightarrow 2CO ; ΔH=220KJ\Delta H = 220KJ

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 Δ\DeltaH indicates that this reaction is exothermic. Also, despite being spontaneous reaction, it requires initiation.