Balance the following chemical equations and state whether they are exothermic or endothermic :
Balance the following chemical equations and state whether they are exothermic or endothermic :
(i) Na + H2O → NaOH + H2
(ii) FeSO4 → Fe2O3 + SO2 + SO3
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(i) 2Na + 2H2O → 2NaOH + H2
It is an exothermic reaction.
(ii)2FeSO4(s) → Fe2O3 + SO2(g) + SO3(g)
It is an endothermic reaction.
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