Stoichiometry
The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is

0.2
0.4
0.6
0.8

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Stoichiometry
Heat of reaction is not influenced by

Whether the reaction is carried out at constant temperature or constant pressure
None of these
The physical state (e.g., solid, liquid or gaseous) of reactants and products
The route/method through which final products are obtained

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Stoichiometry
Pick out the wrong unit conversion of heat transfer co-efficient.

1 kcal/m².hr.°C = 0.2048 BTU/ft².hr. °F. = 1.163 W/m².°K
1 kcal/m².hr.°K = 1.163 W/m².°C
1 BTU/ft².hr.°F = 4.88 kcal/m².hr.°C = 20.44 kJ/m².hr°C = 5.678 W/m².°C
1 W/m² . °C = 0.1761 BTU/ft².hr.°F

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