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11.4 Alkanes
When the number of atoms in a molecule of a hydrocarbon increases, the amount of energy released when it burns increases.
What is the correct order?
| less energy | → | more energy released |
A | methane | ethene | ethane |
B | ethene | ethane | methane |
C | ethene | methane | ethane |
D | methane | ethane | ethene |
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How many moles of hydrogen chloride are formed when one mole of methane reacts with a large excess of chlorine in sunlight?
1
2
3
4
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The following reaction takes place in the presence of light.
CH4 + Cl2 + light → CH3Cl + HCl
What is the name for this reaction?
Combustion
Polymerisation
Thermal decomposition
Substitution
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