Question detail
Explain the role of heat in the cracking process of alkanes.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Alkanes
Question
Explain the role of heat in the cracking process of alkanes.
Answer
Heat provides the energy needed to break the C-C and C-H bonds in alkanes, allowing the molecules to rearrange into smaller hydrocarbons.
Explanation
This question assesses the student's understanding of the conditions required for cracking. It highlights the importance of heat in facilitating bond breaking and the formation of new products, which is essential in the cracking process.
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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