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chemistry > organic chemistry - reactions of alkenes and alcohols > Flashcards

organic chemistry - reactions of alkenes and alcohols Flashcards

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1
Q

what is the general formula for an alkene?

A

CnH2n

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2
Q

what is the structure of an alkene?

A

have at least on carbon-carbon double bond

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3
Q

why are alkenes unsaturated?

A

because they contain two fewer hydrogen atoms with a same number of carbon atoms

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4
Q

what are the first four alkenes?

A

ethene, propene, butene, pentene

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5
Q

what is the functional group of alkenes?

A

c=c

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6
Q

what is an incomplete combustion?

A

carbon or carbon monoxide is produced

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7
Q

what happens when a alkene reacts with a hydrogen, water and the halogens?

A

when atoms are added in the carbon-carbon double bond, the double bond then becomes a single

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8
Q

what functional group do alcohols contain?

A

-OH

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9
Q

what are the first four alcohols?

A

methanol, ethanol, propanol, butanol

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10
Q

what happens when the alcohols burn in the air?

A

they produce carbon dioxide and water

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11
Q

what happens when alcohols dissolve in water?

A

they form a neutral solution

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12
Q

what happens when alcohols react with sodium?

A

they produce hydrogen and a salt

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13
Q

what happens when alcohols react with oxidising agents?

A

they form carboxylic acids

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14
Q

give one use of methanol.

A

chemical feedstock

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15
Q

give one use of ethanol.

A

main use in alcoholic drinks

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16
Q

what is a use that all four alcohols have in common?

A

they are all fuels

17
Q

what is the process used to produced ethanol using sugar and yeast?

A

fermentation

18
Q

when producing ethanol using sugar and yeast what are the conditions needed to produce it?

A

around 35 degrees and it is an anaerobic processes.

19
Q

what is the functional group of a carboxylic acid?

A

-COOH

20
Q

what are the first four carboxylic acids?

A

methanoic acid, ethanoic acid, propanoic acid and butanoic acid

21
Q

what happens when a carboxylic acid dissolves in water?

A

produces an acidic solution

22
Q

what happens when a carboxylic acid reacts with metal carbonates?

A

they produce carbon dioxide, a salt and water

23
Q

name one ester

A

ethyl ethanoate

24
Q

do carboxylic acids produce strong or weak acids?

A

weak

25
Q

what happens to carboxylic acids in solutions?

A

they do not ionise completely

chemistry (3 decks)

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