Extraction of Metals - Result Question 55
55. Match each of the reactions given in Column I with the corresponding product(s) given in Column II.
(2009)
| Column I | Column II | ||
|---|---|---|---|
| A. | $Cu+$ dil. $HNO _3$ | p. | $NO$ |
| B. | $Cu+$ conc. $HNO _3$ |
q. | $NO _2$ |
| C. | $Zn+$ dil. $HNO _3$ | r. | $N _2 O$ |
| D. | $Zn+$ conc. $HNO _3$ |
s. | $Cu\left(NO _3\right) _2$ |
| t. | $Zn\left(NO _3\right) _2$ |
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Answer:
Correct Answer: 55. $ A \rightarrow p,s; B \rightarrow q, s; C \rightarrow r, t; D \rightarrow q, t $
Solution:
- A. $3 Cu+ \underset {\text {dil.} } {8 HNO _3} \longrightarrow 3 Cu\left(NO _3\right) _2+2 NO+4 H _2 O$
B. $Cu+\underset{\text { Conc. }}{4 HNO _3} \longrightarrow Cu\left(NO _3\right) _2+2 NO _2+2 H _2 O$
C. $4 Zn+ \underset{\text { Dil. }} {10 HNO _3} \longrightarrow 4 Zn\left(NO _3\right) _2+N _2 O+5 H _2 O$
D. $Zn+ \underset{\text { Conc. }} {4 HNO _3} \longrightarrow Zn\left(NO _3\right) _2+2 NO _2+2 H _2 O$
BETA
