MCQ
Nitrogen dioxide cannot be prepared by heating
- ✓$KNO_3$
- B$AgNO_3$
- C$Pb(NO_3)_2$
- D$Cu(NO_3)_2$
✓
Answer
Correct option: A.
$KNO_3$
a
Nitrogen dioxide cannot be obtained by heating $KNO _3$. The decomposition reactions are as follows:
Nitrogen dioxide cannot be obtained by heating $KNO _3$. The decomposition reactions are as follows:
A) $4 KNO _3 \rightarrow 2 K _2 O +2 N _2+5 O _2$
B) $2 Pb \left( NO _3\right)_2 \rightarrow 2 PbO +4 NO _2+ O _2$
C) $2 Cu \left( NO _3\right)_2 \rightarrow 2 CuO +4 NO _2+ O _2$
D) $2 AgNO _3 \rightarrow 2 Ag + O _2+2 NO _2$
Except $KNO _3$, we see that all others give $NO _2$.
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