Making insoluble salts
4 marks · NormalCopper(II) sulfate is an insoluble salt that can be made by a precipitation reaction. It is required for an experiment.
Write a balanced chemical equation, with state symbols, for the reaction between copper(II) nitrate solution and sodium sulfate solution to form copper(II) sulfate.
Write the ionic equation, with state symbols, for the formation of copper(II) sulfate in this reaction.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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(a)
(b)
Common mistakes: Missing state symbols; Incorrect formulae
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Marking points
M1 (a) · 1 mark · Correct reactants and products given in the equation.
A1 (a) · 1 mark · All state symbols and balanced equation.
M2 (b) · 1 mark · Correct ions shown in ionic equation.
A2 (b) · 1 mark · Correct state symbols and product given in ionic equation.
Worked solution
a) The balanced equation is:
b) The ionic equation is: