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Question

What type of reactions are represented by the following equations?
(i) CaCO3 CaO + CO2
(ii) CaO + H2O Ca(OH)2
(iii) 2FeSO4 Fe2O3 + SO2 + SO3
(iv) NH4Cl NH3 + HCl
(v) 2Ca + O2 2CaO

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