Explain how naphtha is separated from petroleum (crude oil).
A compound in the naphtha fraction has the formula $\text{C}_{12}\text{H}_{26}$. From this formula, how can you deduce that this compound is an alkane?
The alkane, $\text{C}_{12}\text{H}_{26}$, may be cracked to produce an alkene with six carbon atoms in each molecule. Write the equation for this reaction.
Ethene, $\text{C}_2\text{H}_4$, can be produced by cracking hydrocarbons. Draw a ‘dot-and-cross’ diagram for ethene. Show only the outer-shell electrons.
Chlorine reacts with both ethene and ethane. One molecule of ethene reacts with one molecule of chlorine. Draw the structure of the product of this reaction. Include all atoms and all bonds.
One molecule of ethane can react with two molecules of chlorine. What molecular formula does the organic product have?