Which of the Following Statements Is True

question 70

Multiple Choice

Which of the following statements is true?

• A) The carbonyl carbon in a carboxylic acid does not give a ¹³C signal in a ¹³C-NMR spectrum.
• B) The carbonyl carbon in a carboxylic acid gives a ¹³C signal in the same region as a carbonyl carbon from a ketone or aldehyde - in the range of 200 ppm.
• C) The carbonyl carbon of a carboxylic acid splits a proton signal into a doublet in an H-NMR spectrum.
• D) The carbonyl carbon in a carboxylic acid gives a ¹³C signal in the same region as a carbonyl carbon from an ester or amide in the range of 150 to 180 ppm.
• E) The carbonyl carbon in a carboxylic acid cannot be distinguished from an aromatic carbon because they both give signals in the range of 110 to 130 ppm.

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