What is a homologous series? - Compounds with the same functional group. Follow the same general formula. Have similar properties. Similar reactions., What are the general formulae of alkanes and alkenes? - Alkane: CnH2n+2 Alkene: CnH2n, What is meant by 'alkanes are saturated'? - Alkanes have single covalent bonds between carbon and hydrogen atoms all the way around them., What is meant by 'alkenes are unsaturated'? - Alkenes contain a double covalent bond between carbon and carbon atoms., Describe how to distinguish between alkanes and alkenes. - Add bromine water to alkanes and alkenes and they turn orange. Shake them. Alkenes will decolourise the solution. Alkanes stay orange, What is cracking? - Breaking down long chained hydrocarbons into smaller more useful hydrocarbons., Why is cracking done? - To supply shorter hydrocarbons for which there is greater demand, What is crude oil? - A mixture of hydrocarbons, What is a hydrocarbon? - A compound made of hydrogen and carbon only., What is fractional distillation? - A process that separates substances according to boiling points., What factors does octane number depend on? - Length of carbon chain, cyclic/non cyclic, branches, Where is the residue fraction found in a fractionating column? - At the bottom, What is a use for LPG? - Heating and cooking , What is a use for bitumen? - Tarring roads/waterproofing, Why are mercaptans added to LPG? - To give the odourless gas a smell, What happens to the boiling point as you go down a fractionating column? - It increases, Why are oxygenates added to petrol? - To increase the octane number,

Fuels and heat of Reaction

di
Incorpora

Classifica

Stile di visualizzazione

Opzioni

Cambia modello

Ripristinare il titolo salvato automaticamente: ?