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Reactions of alkenes and alcohols GapFill

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Alkenes are a group of molecules which contain a carbon-carbon  doublesaturatedsingledelocalisedtripleionic bond. The general formula of the  reactivity serieshomologous seriesrelative seriescarbon sequencecombustion sequencehydrocarbon collection of alkenes is CnH2n. Alkenes have fewer hydrogen atoms than their analogous alkanes, so are called  unsaturateduncondensedpolymericmonomericcondensedsaturated.

Alkenes can react with:

  • hydrogen, to form  alcoholscarboxylic acidsalkanessaltsalkynesamino acids
  • water, to form  alkanesamino acidsalcoholscarboxylic acidsalkynessalts
  • halogens, such as bromine, to form haloalkanes
These reactions are all  oxidationcondensationcombustionsubstitutionadditionhydrogenation reactions. When alkenes burn, there is a large amount of  doublecompletepartialincompletesinglehydrogen combustion.

Alcohols are a group of molecules which contain  an NH3an OHan ONHa COOHan OOHan OH2 group. Alcohols can react in the following ways:

  • with  oxygenwaterchlorinesodiumammonianitrogen, to produce hydrogen gas and a salt
  • combustion in air, also known as burning
  • with an oxidising agent, to form  carboxylic acidsalkanesamino acidsalcoholssaltsalkynes

Alcohols are often produced by  fermentationprecipitationphotosynthesisaerobic respirationfiltrationcracking, which uses yeast to make ethanol from glucose.

Carboxylic acids are a group of molecules with the functional group  OHCH2OH2COOHNH3OOH. They can react in the following ways:

  • with carbonates, to produce a salt, water and  hydrogenethanalethanolcarbon dioxidecarbon monoxidean alkane
  • with alcohols, to produce water and  methanecarbon dioxidean alcoholan esteran alkenehydrogen
When carboxylic acids dissolve in water, they release  carbonatenitratehydroxidehydrogenammoniumoxide ions because they are acidic.

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