Chemistry Jan 2010

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Suggest why the concentration of sodium hydroxide in a solution slowly decreases when left open to air.
NaOH reacts with carbon dioxide in the air
1 of 7
Explain why the method of distinguishing optical activity of two isomers will not distinguish between isomer Q and Isomer R.
Product from Q is a racemic mixture; Racemic mixture is inactive; Product from R is inactive
2 of 7
Give a use for methyl esters when glycerol is heated with an excess of methanol.
Biodiesel
3 of 7
Name a suitable method by which a mixture of amino acids formed by hydrolysis can of the protein can be separated.
Electrophoresis or Chromatography.
4 of 7
Identify a suitable reagent for the reduction of a dinitrobenzene into a diamine.
Sn/HCL
5 of 7
State the difference in the biodegradability in Kevlar compared to that of polymerised alkenes, taking into consideration bonding.
Kevlar is biodegradeable but polyalkenes not; Kevlar has polar bonds; Can be hydrolysed; Polyalkenes non polar
6 of 7
Outline a 3 step synthesis starting from methane to produce CH3CH2NH2.
Step 1 Cl2 UV; Step 2 KCN aq and alcoholic; Step 3 LIAH4
7 of 7

Other cards in this set

Card 2

Front

Explain why the method of distinguishing optical activity of two isomers will not distinguish between isomer Q and Isomer R.

Back

Product from Q is a racemic mixture; Racemic mixture is inactive; Product from R is inactive

Card 3

Front

Give a use for methyl esters when glycerol is heated with an excess of methanol.

Back

Preview of the front of card 3

Card 4

Front

Name a suitable method by which a mixture of amino acids formed by hydrolysis can of the protein can be separated.

Back

Preview of the front of card 4

Card 5

Front

Identify a suitable reagent for the reduction of a dinitrobenzene into a diamine.

Back

Preview of the front of card 5
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