How can one differentiate between the organic compounds propanal (CH3CH2CHO) and propanone (CH3COCH3)?
React a sample of each compound with Tollens reagent. The aldehyde (propanal) will be oxidised to a carboxylic acid (propanooic acid) and will form a silver mirror. No change will be observed with the ketone or alternatively Heat a sample of each compound with a solution of acidified potassium dichromate, which is orange. Again, the aldehyde will have been oxidised to a carboxylic acid, and the solution will turn green. The ketone solution will stay orange
JT
Related Chemistry A Level answers
All answers ▸What factors affect the equilibrium position and in what way?
Predict whether the lattice energy of magnesium oxide, MgO, is more or less exothermic than the lattice energy of magnesium sulfide, MgS. Justify your answer in terms of the sizes and the charges of the ions involved.
A reaction, A + B -> C, is considered second order with respect to A and first order with respect to B. What is the effect of simultaneously doubling the concentration of A and B on the rate of reaction?
When vaporised, isotopes of an element can be separated in a mass spectrometer. Name the three processes that occur in a mass spectrometer before the vaporised isotopes can be detected. State how each process is achieved. (6 marks)