Question detail
In the cracking process, what type of reaction occurs?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Alkanes
Question
- A. Addition reaction
- B. Substitution reaction
- C. Elimination reaction
- D. Decomposition reaction
Answer
Decomposition reaction
Explanation
Cracking is a type of decomposition reaction where larger hydrocarbons are broken down into smaller molecules, typically involving heat and sometimes a catalyst.
Common mistake
Incorrect Cracking Equation
Students often write the cracking equation without balancing the number of atoms on both sides, leading to incorrect stoichiometry.
To fix this, ensure that the number of each type of atom is the same on both sides of the equation. For example, when cracking hexane (C6H14) into ethene (C2H4) and butane (C4H10), write the balanced equation: C6H14 → C2H4 + C4H10. Check that there are 6 carbons and 14 hydrogens on both sides.
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