organic chemistry - reactions of alkenes and alcohols Flashcards
(25 cards)
what is the general formula for an alkene?
CnH2n
what is the structure of an alkene?
have at least on carbon-carbon double bond
why are alkenes unsaturated?
because they contain two fewer hydrogen atoms with a same number of carbon atoms
what are the first four alkenes?
ethene, propene, butene, pentene
what is the functional group of alkenes?
c=c
what is an incomplete combustion?
carbon or carbon monoxide is produced
what happens when a alkene reacts with a hydrogen, water and the halogens?
when atoms are added in the carbon-carbon double bond, the double bond then becomes a single
what functional group do alcohols contain?
-OH
what are the first four alcohols?
methanol, ethanol, propanol, butanol
what happens when the alcohols burn in the air?
they produce carbon dioxide and water
what happens when alcohols dissolve in water?
they form a neutral solution
what happens when alcohols react with sodium?
they produce hydrogen and a salt
what happens when alcohols react with oxidising agents?
they form carboxylic acids
give one use of methanol.
chemical feedstock
give one use of ethanol.
main use in alcoholic drinks
what is a use that all four alcohols have in common?
they are all fuels
what is the process used to produced ethanol using sugar and yeast?
fermentation
when producing ethanol using sugar and yeast what are the conditions needed to produce it?
around 35 degrees and it is an anaerobic processes.
what is the functional group of a carboxylic acid?
-COOH
what are the first four carboxylic acids?
methanoic acid, ethanoic acid, propanoic acid and butanoic acid
what happens when a carboxylic acid dissolves in water?
produces an acidic solution
what happens when a carboxylic acid reacts with metal carbonates?
they produce carbon dioxide, a salt and water
name one ester
ethyl ethanoate
do carboxylic acids produce strong or weak acids?
weak
