Question

In which of the following, the carbon-oxygen bonds are of equal lengths?
(1) CH3COO-
(2) CH3COOH
(3) CH3COOC2H5
(4) All of these

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Answer 1

Explanation:

Acetate ion forms a resonance structure where the negative charge is delocalized over all three atoms and therefore, two carbon-oxygen bonds are of equal length. The negative charge is spread over the end of the molecule equally. The two bonds are shorter than a single bond but longer than double bond.

Bond length decreases with multiplicity of bond between two atoms. For example, bond length of ethane > ethene > ethyne.

Hence, assertion is true, reason is true and reason is not the correct explanation for assertion.

Answer 2

Answer:

option 2 ch3cooh

Explanation:

ethanoic acid commonly known as acetic acid