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Chemistry Paper 2 > C10:OrganicReactions > Flashcards

C10:OrganicReactions Flashcards

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1
Q

general alkene formula

A

CnC2n

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2
Q

what does complete combustion of an alkene form

A

carbon dioxide and water

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3
Q

how do alkenes react with halogens, hydrogen and water

A

by adding atoms across the C=C bond, forming a saturated molecule

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4
Q

alcohol functional group

A

-OH

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5
Q

name 3 homologous series’

A

alcohols, carboxylic acids and esters

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6
Q

carboxylic acid functional group

A

-COOH

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7
Q

ester functional group

A

-COO-

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8
Q

what are alcohols used for

A

solvents, fuels

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9
Q

what alcohol is used in alcoholic drinks

A

ethanol

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10
Q

give the first 4 alcohols

A

methanol, ethanol, propanol, butanol

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11
Q

give the first 4 carboxylic acids

A

methanoic acid, ethanoic acid, propanoic acid, butanoic acid

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12
Q

give the first 4 alkenes

A

ethene, propene, butene, pentene

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13
Q

give the first 4 alkanes

A

methane, ethane, propane, butane

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14
Q

what are the products when alcohols burn in air

A

carbon dioxide and water

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15
Q

what are the products when alcohols react with sodium metal

A

a solution of sodium alkoxide and hydrogen gas is given off

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16
Q

when ethanol is oxidised what is formed

A

ethanoic acid

17
Q

what is the main acid in vinegar

A

ethanoic acid

18
Q

how can ethanol be oxidised

A

by chemical oxidising agents or by the action of microbes in the air

19
Q

what ph do solutions of carboxylic acids have

A

less than 7

20
Q

what do carbonates do when added to carboxylic acids

A

gently fizz and release carbon dioxide gas

21
Q

are carboxylic acids weak or strong

A

weak

22
Q

aqueous solutions of carboxylic acids have a higher ph than what

A

solutions of strong acids of the same concentration

23
Q

how are esters made

A

reacting a carboxylic acid with an alcohol in the presence of a strong acid catalyst

24
Q

what are esters used for

A

flavourings and perfume

25
Q

characteristics of an ester

A

volatile and fragrant compounds

Chemistry Paper 2 (9 decks)

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