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Write chemical equations for the reactions taking place when :
(A) $\ce{Fe2O3}$ is heated with aluminium powder.
(B) Sodium metal reacts with water.
(A) $\ce{Fe2O3}$ is heated with aluminium powder.
(B) Sodium metal reacts with water.
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$\ce{Fe2O3(s) + 2Al(s) -> 2 Fe(l) + Al2O3(s) + Heat}$ (1 Mark)
$\ce{2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g) + Heat}$ (1 Mark)
(Balancing is optional)
$\ce{2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g) + Heat}$ (1 Mark)
(Balancing is optional)