Identify the balanced chemical equation from the following equations.
(a) CaCO3 + 2HCl----->CaCl2 + H2O + CO2
(b) MnO2 + 4Al ------> 3Mn + 2Al2O3
(c) Mg + O2------->2MgO
(d) AgBr------->2Ag + Br2 please answer fast
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Combination reaction : Cao+CO2→CaCO3, in this reaction calcium oxide is combines with carbon dioxide to form calcium carbonate.
(b) Decomposition reaction : CaCO3→CaO+CO2, in this reaction calcium carbonate is decomposed to calcium oxide and carbon dioxide.
(c) Displacement reaction : Fe(s)+CuSO4(aq.)→FeSO4(aq)+Cu(s), in this reaction Fe displaces copper to form ferric sulphate.
(d) Analysis reaction : 2H2O→2H2+O2
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