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3.1 Introducing chemical reactions

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Question 26
H

A student reacts 2.70 g of aluminium with 7.10 g of chlorine, Cl2\mathrm{Cl_{2}}Cl2​.

2Al+3Cl2→2AlCl3 \mathrm{2Al + 3Cl_{2} \rightarrow 2AlCl_{3}} 2Al+3Cl2​→2AlCl3​

Relative atomic mass (ArA_rAr​): Al = 27.0 Cl = 35.5

Which option identifies the limiting reactant and the maximum mass of aluminium chloride made?

[1]
A

Aluminium is limiting; 13.4 g

B

Chlorine is limiting; 8.90 g

C

Neither reactant is limiting; 9.80 g

D

Chlorine is limiting; 13.4 g

Markscheme

3.1 Introducing chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.1 Introducing chemical reactions

55 exam-style questions on OCR GCSE Chemistry 3.1 Introducing chemical reactions, covering 3.1.1 Writing formulae and balanced chemical equations, 3.1.2 Formulae of compounds from ions, and state symbols, 3.1.3 Conservation of mass and observed changes in mass, 3.1.4 Half equations and balanced ionic equations, 3.1.5 The mole and the Avogadro constant, and 3.1.6 Stoichiometry, limiting reactants and reacting masses. Each one has a worked solution and a mark scheme showing where the marks go.

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