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Chemical Reactions and Equations
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30/08/2021 4:11 pm
Topic starter
(a) Explain, with example, how the physical states of the reactants and products can be shown in a chemical equation.
(b) Balance the following equation and add state symbols:
Zn + HCl → ZnCl2 + H2
(c) Convey the following information in the form of a balanced chemical equation:
“An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution.”
1 Answer
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30/08/2021 4:12 pm
(a) The physical states of the reactants and products are shown by putting the “state symbols” in an equation.
For example: Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2
(b) Zn (s) + 2HCl(aq) → ZnCl2 (aq) + H2 (g)
(c) FeSO4(aq)+ 2NaOH (aq) → Fe(OH)2 (s) + Na2SO4(aq)