Tests for functional groups Flashcards

1
Q

Test for alkene

A

add bromine water - orange to colourless

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Test for primary/secondary alcohol

A

warm with acidified potassium dichromate - orange to green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Test for aldehyde

A

warm with Tollen’s reagent - silver mirror (precipitate)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Test for aldehyde 2

A

warm with Fehling’s solution - red precipitate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Test for chloroalkane

A

warm with silver nitrate in ethanol - white precipitate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Test for bromoalkane

A

warm with silver nitrate in ethanol - cream precipitate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Test for iodoalkane

A

warm with silver nitrate in ethanol - yellow precipitate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Test for carboxylic acid

A

add sodium carbonate or sodium hydrogen carbonate - bubbles of CO2 - white ppt with limewater

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Test for carboxylic acid 2

A

add magnesium - hydrogen produced - squeaky pop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Inference if Tollen’s reagent does not produce a silver mirror

A

ketone present (not aldehyde)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Inference if Fehling’s solution remains blue

A

ketone present (not aldehyde)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Inference if alcohol does not turn potassium dichromate from orange to green

A

tertiary alcohol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly