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Date May 2017 Marks available 1 Reference code 17M.1.hl.TZ2.12
Level HL Paper 1 Time zone TZ2
Command term State Question number 12 Adapted from N/A

Question

Which is the first step in the CFC-catalysed destruction of ozone in UV light?

A.     CCl2F2 → CClF2+ + Cl

B.     CCl2F2 → •CClF2 + Cl•

C.     CCl2F2 → CCl2F+ + F

D.     CCl2F2 → •CCl2F + F•

Markscheme

B

Examiners report

[N/A]

Syllabus sections

Additional higher level (AHL) » Topic 16: Chemical kinetics » 16.1 Rate expression and reaction mechanism
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