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JEE Main Chemistry question

ChemistryHydrocarbonsJEE Main

MgC . What is the ratio of sigma to pi bonds in the product ?

Answer: 7 (i.e. a 7:1 ratio)

Solution

Magnesium sesquicarbide, MgC, hydrolyses to propyne, CH–CCH (). Passing propyne through a red-hot iron tube at 873 K effects cyclotrimerisation (analogous to acetylene's classic trimerisation to benzene),

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Question ID VK-142911