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Urea reacts with water to form A which will decompose to form B. B when passed through $Cu^{2+}$ (aq), deep blue colour solution C is formed. What is the formula of C from the following?
A
$[Cu(NH_3)_4]^{2+}$
B
$Cu(OH)_2$
C
$CuCO_3\cdot Cu(OH)_2$
D
$CuSO_4$
Detailed Solution
$NH_2CONH_2 + 2H_2O \rightarrow (NH_4)_2CO_3$ (A)
$(NH_4)_2CO_3 \xrightarrow{\Delta} 2NH_3(g) + CO_2(g) + H_2O(l)$ (B = $NH_3$)
$Cu^{2+}(aq) + 4NH_3 \rightarrow [Cu(NH_3)_4]^{2+}$ (C, deep blue solution)