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Q#1
Solution Thermodynamics
GATE CH 2022
NAT
+2 marks
-0 marks
The molar excess Gibbs free energy (𝑔E ) of a liquid mixture of A and B is given by
.
where 𝑥A and 𝑥B are the mole fraction of A and B, respectively, the universal gas constant, 𝑅 = 8.314 J K-1 mol-1, 𝑇 is the temperature in K, and 𝐶1, 𝐶2 are temperature-dependent parameters. At 300 K, 𝐶1 = 0.45 and 𝐶2 = −0.018. If 𝛾A and 𝛾B are the activity coefficients of A and B, respectively, the value of
at 300 K and 1 bar is _________ (rounded off to the nearest integer).
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| Topic | Questions | Attempted | Correct | |
|---|---|---|---|---|
| Heat Transfer | 26 | 0 | 0 | |
| Chemical Technology | 17 | 0 | 0 | |
| Mechanical Operations | 12 | 0 | 0 | |
| Mass Transfer | 42 | 0 | 0 | |
| Instrumentation and Process Control | 26 | 0 | 0 | |
| Fluid Mechanics | 24 | 0 | 0 | |
| Engineering Mathematics | 41 | 0 | 0 | |
| General Aptitude | 60 | 0 | 0 | |
| Chemical Reaction Engineering | 26 | 0 | 0 | |
| Process Calculation | 9 | 0 | 0 | |
| Plant Design Economics | 10 | 0 | 0 | |
| Thermodynamics | 24 | 0 | 0 |
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