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Several structural isomers of C3H8O3 are listed below - CIE - A-Level Chemistry - Question 39 - 2016 - Paper 1
Question 39
Several structural isomers of C3H8O3 are listed below. HOCH2COCH2OH HOCH2CH(OH)CHO HOCH2CH2CO2H CH3CH(OH)CO2H Which statements about these structural isomers are c... show full transcript
Worked Solution & Example Answer:Several structural isomers of C3H8O3 are listed below - CIE - A-Level Chemistry - Question 39 - 2016 - Paper 1
Step 1
1. One mole of each reacts with two moles of sodium.
Answer
This statement is incorrect. For each of the listed isomers, the reaction with sodium typically occurs at the hydroxyl (–OH) group. Each of these isomers contains two or more –OH groups, which will react with sodium. Therefore, it is not correct that one mole of each would uniformly react with two moles of sodium.
Step 2
Step 3
3. They all contain a primary alcohol group.
Answer
This statement is incorrect. While some of the isomers contain primary alcohol groups, such as HOCH2COCH2OH and CH3CH(OH)CO2H, not all compounds in the list are primary alcohols, as shown with the tertiary alcohol in the previous statement.