31. The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes. This is the __________ law.
32. S.T.P. corresponds to
33. The vapor pressures of benzene and toluene are 3 and $$\frac{4}{3}$$ 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
34. Raoult's law states that 'the equilibrium vapor pressure that is exerted by a component in a solution is proportional to the mole fraction of that component'. This generalisation is based on the assumption that the
35. Kopp's rule is useful for the determination of
36. Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 × 10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to -100°C is
37. A sugar solution containing __________ percent sugar is equivalent to 1 Brix.
38. Methane is mixed with stoichiometric proportion of oxygen and completely combusted. The number of additional specifications required to determine the product flow rate and composition is
39. The heat of solution depends upon the
40. A butane isomerisation process produces 70 kmole/hr of pure isobutane. A purge stream removed continuously, contains 85% n-butane and 15% impurity (mole%). The feed stream is n-butane containing 1% impurity (mole%). The flow rate of the purge stream will be
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