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 ▸What happens to reactivity as you go down group 1 in the periodic table?
How to predict the bond angle and shape of a molecule of NH3
A naturally occurring sample of the element boron has a relative atomic mass of 10.8 In this sample, boron exists as two isotopes. Calculate the percentage abundance of 10B in this naturally occurring sample of boron.
In terms of the structure and boiling point of graphite, explain why the melting point is high