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5 cards from this section. Quick, good the night before a test.
Name the product formed when ethanal is oxidised by acidified potassium dichromate, and write the equation.
Aldehydes are oxidised to acids with the same number of carbon atoms.
Which acid is formed when toluene is heated with alkaline KMnO4 and the mixture is then acidified?
The methyl side chain becomes a –COOH group.
Which reagent converts CH3MgBr into ethanoic acid after acid work-up?
The carboxyl carbon comes from this reagent.
Hydrolysis of ethanenitrile (CH3CN) with dilute acid gives:
Hydrolysis keeps the carbon of the cyanide group.
Starting from benzene, suggest two different routes to benzoic acid and give the equations for each step.
Either put a carbon side chain on the ring and oxidise it, or make a Grignard reagent and add CO2.
An ester with the formula C5H10O2 is boiled with aqueous NaOH. Distillation gives ethanol, and acidifying the remaining solution gives an acid X. Identify the ester and X, and explain each step with equations.
Subtract the two carbons of the ethyl group from the ester's five.
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