Cyclohexane, C6H12, is a cycloalkane. Cycloalkanes react in a similar way to alkanes. [Diagram of cyclohexane] cyclohexane

1. (a)(i)Cyclohexane is a saturated hydrocarbon. What is the meaning of the term saturated?[1]
2. (a)(ii)What is the meaning of the term hydrocarbon?[1]
3. (b)Construct the equation for the complete combustion of cyclohexane.[1]
4. (c)Cyclohexane reacts with chlorine in the presence of ultraviolet light. This is a substitution reaction. Write the molecular formulae of two products of this reaction.[2]
5. (d)Cyclohexane can be manufactured from hexane as shown in the equation. C6H14 → C6H12 + H2 Calculate the mass of cyclohexane that can be made from 258 g of hexane. [Mr of cyclohexane = 84][2]
6. (e)(i)Another cycloalkane has the following percentage composition by mass. C, 85.7%; H, 14.3% Use the percentage composition by mass to show that the empirical formula of the cycloalkane is CH2.[2]
7. (e)(ii)Draw the structure of the cycloalkane with an Mr of 56, showing all of the atoms and all of the bonds.[1]

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