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Amount of substance

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Question 9

Aluminium sulfate is widely used in water treatment as a coagulant to clarify drinking water by precipitating suspended impurities. What is the correct chemical formula of aluminium sulfate?

A

Al3(SO4)2\text{Al}_3(\text{SO}_4)_2Al3​(SO4​)2​

B

Al2SO4\text{Al}_2\text{SO}_4Al2​SO4​

C

Al(SO4)3\text{Al}(\text{SO}_4)_3Al(SO4​)3​

D

Al2(SO4)3\text{Al}_2(\text{SO}_4)_3Al2​(SO4​)3​

Markscheme

Amount of substance Questions

  1. A Level
  2. /Chemistry
  3. /Amount of substance

79 exam-style questions on AQA A Level Chemistry Amount of substance, covering Relative atomic mass and relative molecular mass, The mole and the Avogadro constant, The ideal gas equation, Empirical and molecular formula, and Balanced equations and associated calculations. Each one has a worked solution and a mark scheme showing where the marks go.

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