Stoichiometry
If a solution of eutectic composition is cooled, __________ reaching the eutectic temperature.

The solvent begins to freeze out even before
It will undergo no change until
It will not solidify even on
None of these

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Stoichiometry
A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container

Will be less than 298 K
Will be greater than 298 K
Will be 298 K
Can not be determined

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Stoichiometry
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies

Xw = 0.5
0.5 < Xw < 1.0
Xw = 1.0
0 < Xw < 0.5

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