Fuels & Alkanes 4 MS
Fuels & Alkanes 4 MS
Fuels & Alkanes 4 MS
chlorine [1]
NOT: substitute
[Total: 8]
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2 (a (i) correct structure of an isomer e.g. 2-chloropropane; [1]
(b)
b) add silver nitrate / lead nitrate; [1]
yellow precipitate; [1]
note: do not insist on presence of dilute nitric acid
(ii) halogens Cl > Br > I reactivity / reactivity decreases down group; [1]
organic halides I > Br > Cl / reactivity increases down group; [1]
opposite without explanation = [1]
[Total: 15]
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3 (a) (i) coal or coke or peat
[1]
NOT wood or charcoal
(ii) natural gas or methane or propane or butane or petroleum gases or calor gas or
refinery gas [1]
(ii) waxes or grease or lubricants or polishes or bitumen (tar, asphalt) or naphtha [2]
Any TWO from the primary or secondary distillation of petroleum
(iii) (liquid) air or ethanol and water or alkenes (made by cracking) or Noble Gases
[1]
[Total: 7]
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4 (a (i) heat (energy) [1]
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(c) (i) cracking
heat (alkane) or (alkane) and catalyst
NOTE thermal cracking or catalytic cracking [2]
alkane = alkene + hydrogen
ANY TWO [2]
OR steam reforming
CH4 + H2O = CO + 3H2 [2]
or water/steam [1]
catalyst or heat [1]
(d)
d) methyl ethanoate [1]
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