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Unformatted text preview: Examples of common hydrocarbons: Name Molecular formula methane CH 4 propane C 3 H 8 butane C 4 H 10 octane C 8 H 18 When hydrocarbons are combusted they react with oxygen (O2) to form carbon dioxide (CO 2 ) and water (H 2 O). For example, when propane is burned the reaction is: Other compounds which contain carbon, hydrogen and oxygen (e.g. the alcohol methanol CH 3 OH, and the sugar glucose C 6 H 12 O 6 ) also combust in the presence of oxygen (O 2 ) to produce CO 2 and H 2 O. Combination and decomposition reactions In combination reactions two or more compounds react to form one product: In decomposition reactions one substance undergoes a reaction to form two or more products. For example, many metal carbonates undergo a heat dependent decomposition to the corresponding oxide plus CO 2 : 1996 Michael Blaber...
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- Spring '10