Top answers

Which test would you use to identify the difference between an aldehyde and a ketone? Explain your observations.

Tollens Reagent "silver mirror test". When added to the aldehyde, a silver mirror appears. When added to the ketone, nothing happens.This is because the Tollens Reagent oxidises the aldehyde, while...
RJ
Answered by Rachel J. • Chemistry tutor
10374 Views

Why does a sample containing compounds with chiral carbons have no effect on plane polarised light?

For a sample containing chiral carbons to have no effect on plane polarised light there must be an equal amount of each enantiomer in the sample. Enantiomers rotate plane polarised light by the same amount b...
AH
4602 Views

There are three test tubes. One containing HCl, one containing HBr and containing HI. How could you identify which is in each test tube?

Add acidified AgNO 3 to each test tube. HCl will produce a white precipitate, HBr will produce a cream precipitate and HI will produce a yellow precipitate.
AL
Answered by Adam L. • Chemistry tutor
9606 Views

Explain why the product of a nucleophilic addition to butanone does not effect plane polarized light.

The nucleophile will attack the d + carbon atom of the carbonyl group. Since the carbonyl group is planar, attack can occur from either side with equal probability. The product of this reaction will contain ...
PW
Answered by Philip W. • Chemistry tutor
8791 Views

Why do certain metals give off different colours when heated?

This is to do with the electrons in the metal atoms. When a piece of the metal is heated, if there is enough energy supplied to the atoms, their electrons are excited and are promoted (jump up) to higher ene...
JR
Answered by Josh R. • Chemistry tutor
16936 Views