Skip to content

Course home

3.1 Introducing chemical reactions

Easy Medium Hard

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59

Question 15

A chemical supplier's database has lost the formula from its entry for aluminium nitrate. The database still records aluminium oxide as $Al2O3\mathrm{Al_{2}O_{3}}$ and sodium nitrate as $NaNO3\mathrm{NaNO_{3}}$ .

What is the formula of aluminium nitrate?

[1]

A

$Al2(NO3)3\mathrm{Al_{2}(NO_{3})_{3}}$

B

$Al3(NO3)2\mathrm{Al_{3}(NO_{3})_{2}}$

C

$Al(NO3)2\mathrm{Al(NO_{3})_{2}}$

D

$Al(NO3)3\mathrm{Al(NO_{3})_{3}}$

Markscheme

3.1 Introducing chemical reactions Questions

GCSE
Chemistry
3.1 Introducing chemical reactions

134 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.

Question bank