Stoichiometry
In a binary liquid system, the composition expressed as __________ is independent of the temperature & pressure.

Kg of solute/kg of solvent
Kg-mole of solute/1000 kg of solvent
All of these
Kg-mole of solute/kg-mole of solvent

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Stoichiometry
At 100°C, water and methylcyclohexane both have vapour pressures of 1 atm. Also at 100°C, the latent heats of vaporisation of these compounds are 40.63 kJ/mole for water and 31.55 kJ/mole for methylcyclohexane. The vapour pressure of water at 150°C is 4.69 atm. At 150°C, the vapour pressure of methylcyclohexane would be expected to be

Significantly more than 4.69 atm
Nearly equal to 4.69 atm
Significantly less than 4.69 atm
Indeterminate due to lack of data

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