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Question

On complete combustion of ethane to its products, the hybridization of carbon :

A
Remains the same.
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B
Changes from sp2 to sp3
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C
Changes from sp3 to sp2
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D
Changes from sp3 to sp
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Solution

The correct option is D Changes from sp3 to sp
Complete combustion :
The process of heating a substance in the presence of sufficient air/O2
The substance is completely oxidized to CO2 and H2O accompanied by evolution of a large amount of heat.

The general reaction for complete combustion is :
CnH2n+2+3n+12O2nCO2+(n+1)H2O+Heat

Combustion reaction of ethane :
CH3CH3+72O22CO2+3H2O+Heat
Hybridization of carbon in ethane is sp3
Hybridization of carbon in CO2 is sp
Hence (d) is correct

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