MCQ
Ammonium carbamate $(NH_4COONH_2)$ when heated to $200\,^oC$ gives a mixture of $NH_3$ and $CO_2$ with a vapour density of $26$ at equilibrium. What is the degree of dissociation of ammonium carbamate ?
- A$2/3$
- ✓$0.25$
- C$0.5$
- D$1$
✓
Answer
Correct option: B.
$0.25$
b
$\mathrm{D}_{t}=\frac{\mathrm{M.} \mathrm{W.}}{2}=\frac{78}{2}=39, \mathrm{D}_{0}=26$
$\mathrm{D}_{t}=\frac{\mathrm{M.} \mathrm{W.}}{2}=\frac{78}{2}=39, \mathrm{D}_{0}=26$
$\alpha=\frac{D_{t}-D_{0}}{D_{0}(n-1)}$
$\alpha=\frac{39-26}{26(3-1)}=\frac{13}{52}=\frac{1}{4}$
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