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Stoichiometry

Stoichiometry
Cv for monoatomic gases is equal to(where, R = gas constant)

R
1.5 R
3R
2R

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Stoichiometry
Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³ . The diffusivity of aniline in air is 0.74xl0-5m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10-3. Its units are

Mole/m².s.Pa
M/s
Kmole/m².s.Pa
Cm/s

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Stoichiometry
In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

Unchanged by the pressure change
Independent of the temperature
Decreased with the increase in pressure
Increased with the increase in pressure

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Stoichiometry
Pick out the wrong conversion formula for the conversion of weight units :

1 U.S. ton = 907 kg = 0.907 tonne = 0.893 ton
1 ton = 2240 lbs = 1016 kg = 1.016 tonnes = 1.12 U.S. tons
None of these
1 tonne = 1000 kg = 22.046 lbs

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Stoichiometry
'Cox' chart which is useful in the design of a distillation column (particularly suitable for petroleum hydrocarbons) is a plot of the

Vapor pressure vs. log (temperature)
Temperature vs. log (vapor pressure)
Log (temperature) vs. log (vapor pressure)
Vapor pressure vs. temperature

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Stoichiometry
Addition of a non-volatile solute to a solvent produces a __________ in its solvent.

Vapor pressure lowering
Boiling point depression
Freezing point elevation
All of these

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