State the reagents and conditions for the formation of an aldehyde, starting from a primary-alcohol.
Answer: Heat with acidified potassium dichromate (IV), distilling off the aldehyde as it forms.
Explanation: To form an aldehyde from an alcohol the alcohol group must be oxidised. To do this we use potassium dichromate (IV) acidified by dilute sulfuric acid. We also need to heat the reaction mixture to overcome the activation energy required for the reaction. However, we do not want to heat under reflux else the once the aldehyde is formed it will be oxidised further to form a carboxyllic acid. Instead, we distill off the aldehyde product as it is formed.
TO
Related Chemistry A Level answers
All answers ▸Describe briefly the nature of metallic bonding and use this to explain why metals are malleable (can be hammered into shape) and conduct electricity
What is a formula of Potassium Sulfate?
what is the shape and bond angle of NH3 and use VSEPR theory to explain the bond angle.
Explain how a buffer solution resists the pH change when an acid or alkali is added.