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Problem
Problem
Explain why the two C–O bond lengths in propanoic acid,
C
2
H
5
COOH
\text{C}_2\text{H}_5\text{COOH}
C
2
H
5
COOH
, are different and yet the two C–O bond lengths in the propanoate anion,
C
2
H
5
COO
−
\text{C}_2\text{H}_5\text{COO}^-
C
2
H
5
COO
−
, are the same length.
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