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Aldhydes And Ketones(optical isomerism

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

What does partial oxidation of primary alcohol form

Back (Answer)

It results an aldehyde forming

#2
Front (Question)

What does oxidation of a secondary alcohol

Back (Answer)

Results in a forming a ketone

#3
Front (Question)

What is the oxidizing agent used in the oxidation primary alcohol and secondary alcohol and aldehydes

Back (Answer)

Potassium dichromate in sulphuric acid (gentle warming needed)

#4
Front (Question)

What happens to the potassium dichromate

Back (Answer)

The orange colour reduced to green

#5
Front (Question)

What is the symbol for oxidation

Back (Answer)

[O]

#6
Front (Question)

Give the simplified equations for oxidation reactions

Back (Answer)

R-CH2OH+[O]–R-CHO +H2O

#7
Front (Question)

Give the oxidation reaction for secondary alcohol

Back (Answer)

R1-CH(OH)-R2+[O]–R1-CO-R2+ H2O

#8
Front (Question)

When oxidised further what do aldehydes produce

Back (Answer)

Carboxylic acid

#9
Front (Question)

What two tests can help distinguish between aldehydes and ketones

Back (Answer)

Tollens reagent Feelings solution

#10
Front (Question)

What occurs when aldehydes and ketones react with tollens reagent

Back (Answer)

Aldehydes- tollens reagent is reduced and a grey silver mirror forms (carboxylic acid formed) Ketones-no reaction

#11
Front (Question)

What happens when fehlings solution reacts with an aldehyde or ketone

Back (Answer)

Aldehydes- it’s reduced from the blue copper to red brick red precipitate on gentle warming Ketone- no reaction

#12
Front (Question)

What reducing agent is used to reduce aldehydes and ketones to alcohols

Back (Answer)

NaBH4 sodium tetrahydroborate

#13
Front (Question)

What symbol shows reduction

Back (Answer)

[H] 2[H] in equation

#14
Front (Question)

Give the simplified equation for the reduction of aldehyde

Back (Answer)

R-CHO + 2[H]-> R-CH2OH(primary alcohol)

#15
Front (Question)

Give a simplified equation for reduction of ketone

Back (Answer)

R1-CO-R2 +2[H]->R1-CH(OH)-R2 (secondary alcohol)

#16
Front (Question)

What reducing agent is used to reduce carboxylic acids

Back (Answer)

LiAlH4

#17
Front (Question)

What reactions do carbonyls undergo

Back (Answer)

Nucleophilic addition

#18
Front (Question)

What nucleophile undergoes nucleophillic addition with carbonyls in reduction

Back (Answer)

HCN

#19
Front (Question)

Give the simplified equation for when HCN is reacted with carbonyls in reduction

Back (Answer)

R1-CO-R2 + HCN->R1-C(CN)(OH)-R2

#20
Front (Question)

What is produced when carbonyls undergo reduction with HCN

Back (Answer)

Hydroxynitrile

#21
Front (Question)

Write out equation for reduction by NaBH4 to make alcohols

Back (Answer)

R1-CO-R2+ 2[H]->R1-CH(OH)-R2

#22
Front (Question)

What is chirality

Back (Answer)

When 4 different groups are attached to one carbon

#23
Front (Question)

What are optical isomers (enantiomers)

Back (Answer)

They are two non superimposable mirror images

#24
Front (Question)

How can optical isomers be distinguished

Back (Answer)

By passing plane polarised light through a liquid containing a chiral molecule