The P Block Elements - Result Question 2
####2. A compound ’ $X$ ’ upon reaction with $H_2 O$ produces a colorless gas ’ $Y$ ’ with rotton fish smell. Gas ’ $Y$ ’ is absorbed in a solution of $CuSO_4$ to give $Cu_3 P_2$ as one of the products. Predict the compound ’ $X$ ‘.
[NEET Odisha 2019]
(a) $Ca_3(PO_4)_2$
(b) $Ca_3 P_2$
(c) $NH_4 Cl$
(d) $As_2 O_3$
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Solution:
- (b)
$ \begin{aligned} & Ca_3 P_2+6 H_2 O \longrightarrow 3 Ca(OH)_2+2 PH_3 \\ & (X) \quad(Y) \\ & \text{ (rotten fish smell) } \\ & 2 PH_3+3 CuSO_4 \longrightarrow Cu_3 P_2+3 H_2 SO_4 \\ & (Y) \end{aligned} $
