Stoichiometry
The heat evolved in the combustion of benzene is represented by the equation: C₆H₆ + 7.5 O₂ = 6CO₂ + 3H₂O, ΔH = 3264.6 kJ/kg. mole The heat energy change, when 39 gm of C₆H₆ is burnt in an open container, will be __________ kJ/kgmole.

-2448.45
+1632.3
+816.15
-1632.3

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Stoichiometry
Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

Molal latent heat of vaporisation is constant within the limited temperature range
Volume in the liquid state is negligible compared with that in the vapor state
All of these
Vapor follows the ideal gas law

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