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  4. Which of the following organic compounds has same hybridisation as its combustion (CO2) product?

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Q. Which of the following organic compounds has same hybridisation as its combustion (CO$_2$) product?

AIPMTAIPMT 2014Hydrocarbons

Solution:

Hybridisation of carbon = $sp^{3-number \, of \, \pi-bonds}$
In $CO_2 ,$ $_{ \, \, \, \, \, 1\pi \, \, \, \, \, 1\pi}^{(O = \, \, \, C \, = \, \, O)}$ hybridisation of carbon
$ =sp^{3-2}=sp$
In ethyne or acetylene , $C_2H_2 , (H - C ^ \equiv_{2\pi} C - H)$
hybridisation of carbon = $sp^{3-2}=sp$