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 ▸Consider the transition metal complex [CoCl3(CO)3]. What is a) The oxidation state of the metal centre. b) The dn configuration of the metal centre. c) The co-ordination number of the metal centre.
The alkanes and the alkenes are examples of homologous series of compounds. Name 3 properties of a homologous series.
A compound is found to contain 30.7% Sulfur, 23,3% Magnesium and 46% Oxygen. What is the empirical formula of the compound?
What is a coordinate bond?