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What is the displayed formula of propanoic acid? A B C D Your answer [1] - OCR Gateway - GCSE Chemistry - Question 5 - 2022 - Paper 2

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What is the displayed formula of propanoic acid? A B C D Your answer [1]

Worked Solution & Example Answer:What is the displayed formula of propanoic acid? A B C D Your answer [1] - OCR Gateway - GCSE Chemistry - Question 5 - 2022 - Paper 2

Step 1

A

96%

114 rated

Answer

This option shows a structure that does not represent propanoic acid as it lacks the carboxylic acid functional group.

Step 2

B

99%

104 rated

Answer

This option is also incorrect as it does not have the necessary carbon backbone and functional group required for propanoic acid.

Step 3

C

96%

101 rated

Answer

This structure cannot represent propanoic acid since it does not have the terminal carboxylic acid group.

Step 4

D

98%

120 rated

Answer

This is the correct structure for propanoic acid. It contains a three-carbon chain with a carboxylic acid group at one end, represented as follows:

   O
   ||
H–C–C–C
       |  
       H

Thus, the displayed formula correctly represents propanoic acid.

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