Identify A to E and also explain the reactions involved.



A= Cu, B= Cu(NO3)2, C=[Cu(NH3)4](NO3)2, D=CO2,

E=CaCO3


Explanation:


CuCO3→CuO + CO2


(D)


CO2 + Ca(OH)2→ CaCO3+ H2O


(E)


2CuO+CuS → 3Cu +SO2


(A)


Cu+4HNO3(conc) →Cu(NO3)2+ 2NO2 +2H2O


(B)


Cu(NO3)2 + 4NH3→ [Cu(NH3)4](NO3)2


(C)


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