CAIE A-Level Chemistry 14.1.5 General Unreactivity of Alkanes
Practise explaining alkane unreactivity through strong C–C/C–H bonds and their low polarity towards polar reagents.
- Syllabus
- 2028–2030
- Course
- Chemistry 9701
- Level
- AS
Exam points
- state that strong C–C and C–H covalent bonds require substantial energy to break
- state that C–H bonds are effectively non-polar because carbon and hydrogen have similar electronegativities
- link the lack of polar reaction sites to weak attraction for nucleophiles, electrophiles and other polar reagents
14.1.5—The general unreactivity of alkanes question 1
[Maximum number: 2]
The alkanes are a homologous series of organic molecules. Alkanes are generally unreactive and are commonly used as fuels.
Give two reasons to explain the general unreactivity of alkanes.
1
2
M1 strong C-H (bonds)
M2 non-polar (C-H / molecule / bonds)
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