Cracking is a process used to break down larger, less useful hydrocarbon molecules into smaller, more valuable ones.
Decane, C10H22\text{C}_{10}\text{H}_{22}C10H22, can be cracked to produce one molecule of propene, C3H6\text{C}_3\text{H}_6C3H6, and one molecule of another alkane, CyH16\text{C}_y\text{H}_{16}CyH16.
C10H22→C3H6+CyH16 \text{C}_{10}\text{H}_{22} \rightarrow \text{C}_3\text{H}_6 + \text{C}_y\text{H}_{16} C10H22→C3H6+CyH16Determine the value of y y\,y in the molecule CyH16\text{C}_y\text{H}_{16}CyH16.
Practise Edexcel GCSE Chemistry Fuels with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.