Q64Long answer
Identify A to E and also explain the reactions involved. CuCO3 CuO (D) heat with CuS Ca(OH)2 (A) (E) HNO3(conc.) Milky (B) NH3(aq.) CO2 (C) Ca(HCO3)2 Blue solution Clear solution
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A = Cu B = Cu(NO3)2 C = [Cu(NH3)4] D = CO2 E = CaCO3 F = Cu2[Fe(CN)6] G = Ca (HCO3)2 CuCO3 → CuO + CO2 CuO + CuS → Cu + SO2 (A) Cu + 4HNO3 (Conc) → Cu (NO3)2 + 2NO + 2H2O (B) Cu2+ + NH3 → [Cu(NH3)4] (B) (C) Ca(OH)2 + CO2 → CaCO3 + H2O (D) (E) CaCO3 + H2O + CO2 → Ca (HCO3)2