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In the vicinity of the triple point, the vapour pressures of liquid and solid ammonia are respectively given by ln P= 15.16 – 3063/T and In P= 18.70 – 3754/T where P is in atmospheric and T is in kelvin. What is the temperature at the triple point?
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- 95.2 K
- 19.2 K
- 195.2 K
- 115.2 K
Correct Option: C
At triple point the vapour pressure of solid ammonia is equal to vapor pressure of liquid ammonia
| = 18.7 - | ||||
| T | T |
| T = | = 195.2 K | |
| 18.7 - 15.16 |
