How many structural isomers with the molecular formula C3H6O react with Tollens' reagent? - AQA - A-Level Chemistry - Question 28 - 2018 - Paper 3

For the molecular formula C3H6O, we can identify the following structural isomers:

1. Propanal (an aldehyde)
2. Cyclopropanol (a cyclic alcohol)
3. Acetone (a ketone)
4. 1-Propanol (a primary alcohol)
5. 2-Propanol (a secondary alcohol)

Out of these, the isomers that can react with Tollens' reagent are propanal and some alcohols; however, typically only aldehydes react positively.

In this case, we must check which structures count: typically two isomers (propanal and cyclopropanol) are recognized as reacting, thus confirming.

So, the answer is:

4 structural isomers that react with Tollens' reagent.