MCQ
On heating ammonium dichromate, the gas evolved is
- A$O_2$
- ✓$N_2$
- C$N_2O$
- D$NH_3$
✓
Answer
Correct option: B.
$N_2$
b
$\left( NH _4\right)_2 Cr _2 O _7( s ) \rightarrow N _2( g )+4 H _2 O ( g )+ Cr _2 O _3( s )$
$\left( NH _4\right)_2 Cr _2 O _7( s ) \rightarrow N _2( g )+4 H _2 O ( g )+ Cr _2 O _3( s )$
Ammonium dichromate decomposes on heating to produce nitrogen gas water vapour (gaseous due to the temperature of the reaction), and solid chromium($III$) oxide.
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