The acetate ion, CH COO

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

The acetate ion, CH3_3COO −^{\,-}, is represented by two resonance structures in which one C–O bond is double and the other is single. Considering the resonance hybrid, what is the total number of σ\sigma bonds and π\pi bonds present in a single acetate ion? (a) 6  σ bonds,  1  π bond6 \;\sigma\text{ bonds},\;1\; \pi\text{ bond} (b) 6  σ bonds,  2  π bonds6 \;\sigma\text{ bonds},\;2\; \pi\text{ bonds} (c) 6  σ bonds,  0  π bonds6 \;\sigma\text{ bonds},\;0\; \pi\text{ bonds} (d) 5  σ bonds,  1  π bond5 \;\sigma\text{ bonds},\;1\; \pi\text{ bond}

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