1.

What weight of solid ammonium carbamate `(NH_(2)COONH_(4))`, when vaporised at `200^(@)C` will have a volume of `8.96 litre` at `1.0 atm` pressure. Assume that the solid completely decomposes into `CO_(2)` and `NH_(3)` at `200^(@)C` and `1.0 atm` :A. `4 g`B. `6 g`C. `5 g`D. `10 g`

Answer» `{:(,NH_(2)COONH_(4),hArr,2NH_(3),+,CO_(2),),("Before dissociation",a,,0,,0),("After dissociation",a,,2a,,a):}`
Total mole after decomposition `=3a`
`PV=nRT`
`:. 1xx8.96=3axx0.0821xx473`
`:. A=0.077`
`:. Wt of NH_(2)COONH_(4)=0.077xx78=6.0 g`


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