The P Block Elements - Result Question 1
####1. 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? [2020]
(a) $[Cu(NH_3)_4]^{2+}$
(b) $Cu(OH)_2$
(c) $CuCO_3 Cu(OH)_2$
(d) $CuSO_4$
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Solution:
- (a)
$NH_2 CONH_2+H_2 O \longrightarrow(NH_4)_2 CO_3$
(A)
(B)
$NH_3(g) \xrightarrow{Cu^{2+}(aq)}[Cu(NH_3)_4]^{2+}$
(B)
