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z - A Level Chemistry > 6.3.1: Chromatography and qualitative analysis > Flashcards

6.3.1: Chromatography and qualitative analysis Flashcards

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1
Q

How to identify phenols?

A

Weakly acidic

But no reaction with Na₂CO₃ so not carboxylic acid

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2
Q

How to differentiate between ketones and aldehydes?

A

Ketones do not react with Tollens’.

Both react with 2,4-DNP

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3
Q

How to identify alkenes?

A

Bromine water test

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4
Q

How to identify haloalkanes?

A

Reaction with aqueous silver nitrate in ethanol

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5
Q

How to identify primary and secondary alcohols?

A

Acidified potassium dichromate –> orange to green

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6
Q

How to identify a carboxylic acid?

A

Reacts with Na₂CO₃ to form CO₂ (g) i.e. effervescence

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z - A Level Chemistry (40 decks)

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