Urea reacts with water to form A which will d | vedclass

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(C) Urea $(NH_2CONH_2)$ reacts with water to form ammonium carbonate $(A)$: $NH_2CONH_2 + 2H_2O \rightarrow (NH_4)_2CO_3$ $(A)$.Ammonium carbonate dec

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$[Cu(NH_3)_4]^{2+}$

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(C) Urea $(NH_2CONH_2)$ reacts with water to form ammonium carbonate $(A)$: $NH_2CONH_2 + 2H_2O \rightarrow (NH_4)_2CO_3$ $(A)$.Ammonium carbonate decomposes to form ammonia $(B)$: $(NH_4)_2CO_3 \rightarrow 2NH_3 + H_2O + CO_2$ $(B = NH_3)$.When ammonia is passed through $Cu^{2+}_{(aq)}$ solution,it forms a deep blue complex,tetraamminocopper$(II)$ ion: $Cu^{2+}_{(aq)} + 4NH_3(aq) \rightarrow [Cu(NH_3)_4]^{2+}(aq)$ $(C)$.

Urea reacts with water to form $A$ which will decompose to form $B$. $B$ when passed through $Cu^{2+}_{(aq)}$,a deep blue coloured solution $C$ is formed. What is the formula of $C$ from the following?

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