10. Exercises III

2 m.

1. What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.

2. Translate the following statements into chemical equations and then balance them.

Barium chloride reacts with aluminium sulphate to give aluminium chloride and a precipitate of barium sulphate.

\(3BaCl_2\) +\( Al_2(SO_4)_3\) → \(2AlCl_3\) + \(3BaSO_4\)
\(3BaCl_2\) +\( Al_2(SO_4)_3\) → \(2AlBr_3\) + \(3BaSO_4\)
\(2BaCl_2\) +\( Al_2(SO_4)_3\) → \(2AlCl_3\) + \(3BaSO_4\)
\(3BaCl_2\) +\( Al_3(SO_4)_3\) → \(2AlCl_3\) + \(3BaSO_4\)
\(BaCl_2\) +\( Al_2(SO_4)_3\) → \(2AlCl_3\) + \(3BaSO_4\)

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