MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistryThermodynamics and ThermochemistryPrevious Year Questions
The enthalpy and entropy change for the reaction: 2(l) 2(g) (g) Br Cl 2BrCl → are 30 kJ mol–1 and 105JK–1 mol–1 respectively. The temperature at which the reaction will be in equilibrium is (2006)
A.300 K
B.285.7 K✓ Correct
C.273 K
D.450 K
Explanation
2(l) 2(g) (g) Br Cl 2BrCl → –1 –1 H 30kJ mol , S 105kJ mol H 30 S i.e. 105 1000 T T x
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