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2.3 Properties of materials

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Question 3

A laboratory record lists the first three members of a family of bromine-containing organic compounds:

CH3Br\mathrm{CH_{3}Br}CH3​Br, C2H5Br\mathrm{C_{2}H_{5}Br}C2​H5​Br, C3H7Br\mathrm{C_{3}H_{7}Br}C3​H7​Br

The sequence continues in the same pattern.

Relative atomic mass (ArA_{r}Ar​): C = 12.0, H = 1.0, Br = 80.0

What is the relative formula mass of the seventh member of this family?

[1]
A

165.0

B

180.0

C

179.0

D

178.0

Markscheme

2.3 Properties of materials Questions

  1. GCSE
  2. /Chemistry
  3. /2.3 Properties of materials

122 exam-style questions on OCR GCSE Chemistry 2.3 Properties of materials, covering 2.3.1 Carbon bonding and the variety of organic compounds, 2.3.2 Diamond, graphite, fullerenes and graphene, 2.3.3 Bond strength, changes of state and predicting states, 2.3.4 Bulk properties and types of bonding, and 2.3.5 Nanoparticles: scale, surface area, uses and risks. Each one has a worked solution and a mark scheme showing where the marks go.

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