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Date November 2020 Marks available 1 Reference code 20N.1.sl.TZ0.3
Level SL Paper 1 Time zone TZ0
Command term Determine Question number 3 Adapted from N/A

Question

Which of these molecular formulae are also empirical formulae?

  1.  C2H6O
  2.  C2H4O2
  3.  C5H12

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

Markscheme

B

Examiners report

One of the best answered questions on paper 1. Very few of the candidates struggled with distinguishing molecular and empirical formula.

Syllabus sections

Core » Topic 1: Stoichiometric relationships » 1.2 The mole concept
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Core » Topic 1: Stoichiometric relationships
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