MCQ
Which one of the following compounds on strong heating evolves ammonia gas?
- ✓$(NH_4)_2SO_4$
- B$HNO_3$
- C$(NH_4)_2Cr_2O_7$
- D$NH_3NO_3$
$NH _4 NO _3 \rightarrow N _2 O$
$NH _4 NO _2 \rightarrow N _2$
$\left( NH _4\right)_2 SO _4 \rightarrow NH _3$
Ammonia is obtained by heating ammonium sulphate.
$\left( NH _4\right)_2 SO _4 \rightarrow NH _3+ NH _4 HSO _4$
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| Exp | $[A]_0$ | $[B]_0$ | initial rate |
| $1$ | $0.012$ | $0.035$ | $0.10$ |
| $2$ | $0.024$ | $0.035$ | $0.80$ |
| $3$ | $0.012$ | $0.070$ | $0.10$ |
| $4$ | $0.024$ | $0.070$ | $0.80$ |

Reactent $(A)$ is