C10 - Alkenes
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organic molecules
all contain carbon atoms
alkene
carbon, carbon double bond -more reactive that alkane
functional group
gives a family of organic compounds their characteristic reactions
homologous series
family of organic compounds with the same functional group
formula for alkene
CnH2n
Alkene complete combustion features
• clean blue flame -releases co2 and h2o
Which hydrocarbon is used as fuel and why
-alkanes -burns with a cleaner flame
complete combustion formula and what it doesn’t produce
Alkene/Alkane + o2 —> co2 +H2O Doesn’t produce any carbon monoxide
Addition reaction of alkene
Carbon carbon double bond break and another pair of atoms are added on
why are alkenes unsaturated
do not contain max number of hydrogens
by addition of hydrogen to an alkene what is made
alkane
why is addition of hydrogen used
-unsaturated alkenes to saturated alkanes - to make fuel and other hydrocarbons
formation of alcohol
alkene + OH
alcohol functional group
OH
Carboxylic acid - functional group
contains -COOH functional group
Esters functional group
-COO-
ethanol use
-alcoholic drinks -fuel perfume -disinfectant
how is ethanol made
fermenting sugars with yeast or hydration of ethene
ethanol flame
clean blue flame
alcohol and sodium reaction
-fizz (H2 gas) - heat is released
sodium alkoxide in water gives you
strong alkaline solution
formation of carboxylic acid
oxidation of alcohol ethanol + oxygen atoms from oxidising agent
How can alcohol being exposed form a carboxylic acid
microbes produce it as they react
carboxylic acid and metal carbonate
salt + water + co2 -co2 is given off slowly