A2 1 Chemistry

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11 Terms

1
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2,4-dinitrophenylhydrazine + aldehyde/ketone

yellow/orange precipitate

2
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aldehyde + acidified potassium dichromate solution

orange to green

3
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aldehyde + Fehling’s solution

red precipitate

4
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aldehyde + Tollens’ reagent

silver mirror

5
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carboxylic acid + sodium carbonate

solid disappears, fizzing

6
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carboxylic acid + sodium hydroxide

mixture warms up

7
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carboxylic acid + aqueous ammonia

smell disappears

8
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carboxylic acid + alcohol

sweet smell

9
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carboxylic acid + phosphorous pentachloride

solid disappears, misty fumes, mixture warms up

10
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acyl chloride + water

misty fumes, mixture warms up

11
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methyl-3-nitrobenzoate

cream solid