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What is the correct order of carbon-carbon bond lengths in ethane, ethylene and acetylene.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter4: Polar Bonds, Polar Reactions

Section: Chapter Questions

Problem 8CTQ

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Concept explainers

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

Question

What is the correct order of carbon-carbon bond lengths in ethane, ethylene and acetylene.

a. ethane < ethylene < acetylene

b. ethane < acetylene < ethylene

c. ethylene < ethane < acetylene

d. ethylene < acetylene < ethane

e. acetylene < ethane < ethylene

f. acetylene < ethylene < ethane

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