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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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