Topic B3 - Alcohols

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Total cards: 19•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (19)

Front (Question)

Why do alcohols have a higher boiling point than alkanes?

Back (Answer)

-alcohols have a polar O-H bonds (due to difference in electronegativity of oxygen and hydrogen atoms) -hence, alcohol molecules are polar -IMFs will be weak London forces but their will also ne much stronger hydrogen bonds between the polar O-H groups

Front (Question)

Alcohols have a lower volatility when compared to…

Back (Answer)

alkanes with the same number of carbon atoms

Front (Question)

What are alcohols solubility in water?

Back (Answer)

completely soluble in water as hydrogen bonds form between polar -OH group of alcohol and water

Front (Question)

Solubility of alcohols decreases as…

Back (Answer)

hydrocarbon chain increases in size

Front (Question)

What is a primary alcohol?

Back (Answer)

-OH group is attached to a carbon atoms that is attached to: -2 hydrogen atoms -1 alkyl group

Front (Question)

What is a secondary alcohol?

Back (Answer)

-OH group is attached to a carbon atom that is attached to: -1 hydrogen atom -2 alkyl groups

Front (Question)

Complete combustion of alcohols

Back (Answer)

-produces carbon dioxide and water -exothermic reaction -as number of carbons in the chain increases, quantity of heat released per mole increases

Front (Question)

Partial oxidation of primary alcohols —>

Back (Answer)

aldehyde

Front (Question)

Complete oxidation of primary alcohols —>

Back (Answer)

carboxylic acid

#10

Front (Question)

Forming an aldehyde via partial oxidation

Back (Answer)

-gently heat primary alcohol with potassium dichromate -distil aldehyde out of reaction mixture immediately as it forms

#11

Front (Question)

Colour change of alcohol oxidation

Back (Answer)

orange —> green

#12

Front (Question)

Forming a carboxylic acid via full oxidation

Back (Answer)

-heat strongly under reflux -with an excess of potassium dichromate

#13

Front (Question)

Oxidation of secondary alcohols —>

Back (Answer)

ketones

#14

Front (Question)

Forming a ketone via oxidation

Back (Answer)

-heated under reflux -potassium dichromate

#15

Front (Question)

Tertiary alcohols oxidation

Back (Answer)

cannot undergo oxidation reactions - potassium dichromate remains orange

#16

Front (Question)

Dehydration of an alcohol

Back (Answer)

-heated under reflux -concentrated sulfuric acid catalyst -produces an alkene

#17

Front (Question)

Dehydration of an alcohol is an example of what type of reaction?

Back (Answer)

elimination

#18

Front (Question)

Alcohol + hydrogen halide —>

Back (Answer)

haloalkane

#19

Front (Question)

Conditions/ reagents for alcohol —> haloalkane

Back (Answer)

-heated under reflux -sulfuric acid -sodium halide