This question is about hydrocarbons.
The boiling points of some hydrocarbons containing 6 carbon atoms are shown below.
| Hydrocarbon | Boiling point / ∘C^\circ\text{C}∘C |
|---|---|
| 2,2-dimethylbutane | 50 |
| 3-methylpentane | 63 |
| hexane | 69 |
State and explain the trend in boiling points shown by these hydrocarbons.
3-methylpentane reacts with bromine by radical substitution.
3-methylpentane
A mixture of organic products is formed, including 3-bromo-3-methylpentane, and compounds C and D.
Complete the description below to show the mechanism for the formation of 3-bromo-3-methylpentane and three possible equations for termination.
In your equations, use structural or skeletal formulae and 'dots' (∙\bullet∙) for the position of radicals.
Organic compound C is formed by the substitution of all 14 H atoms in 3-methylpentane by Br atoms.
Write the equation, using molecular formulae, for the formation of compound C from 3-methylpentane.
Organic compound D is formed by the substitution of some of the 14 H atoms in 3-methylpentane by Br atoms.
1.219 g1.219\text{ g}1.219 g of compound D is heated until it is vaporised.
Under the conditions used:
Determine a possible molecular formula of compound D.
molecular formula = ..................
