(ii) What type of reaction is this? Catalytic cracking produces gasoline of higher octane number and therefore this method is used for obtaining better quality gasoline. Thermal decomposition occurs as the longer chained hydrocarbon splits up into smaller chained hydrocarbons. (2) e) Write a balanced equation for the cracking of decane to form ethene, another alkene and an alkane. As the name implies, the catalytic cracking process takes place in the presence of a catalyst. Alkanes, alkenes, alcohols, cracking and polymers 130 minutes 130 marks of 46 Q1. (1) 1 (b)€€€€ Octane and isooctane can be separated in the laboratory. Name a laboratory technique that could be used to separate isooctane from a mixture. View alkanes-alkenes-alcohols-cracking-and-polymers questions.pdf from CHEM 001 at Nazarbayev University. Annual production of methyl t-butyl ether.
(1 mark) d When the octane produced is combusted in vehicle engines, . (2 marks) iii Suggest one use for the butene produced as a by-product. Found inside – (1 mark) ii Construct an equation to show the cracking of one molecule of dodecane. The reason why cracking is useful is because it matches supply and demand for the different hydrocarbons.
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