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Chemical Engineering - Stoichiometry

Exercise : Stoichiometry - Section 8
1.
Colligative properties of a dilute solution are those which depend entirely upon the
constitution of the solute.
chemical composition of the solute.
number of solute molecules contained in a given volume of the solvent.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
For an ideal solution, the total vapor pressure varies __________ with the composition(expressed as mole fraction).
inversely
exponentially
linearly
negligibly
Answer: Option
Explanation:
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3.
Pick out the wrong statement.
Atomic heat capacities of the crystalline solid elements are nearly constant and equal to 6.2 kcal/kg-atom according to the law of Petit and Dulong.
Atomic heat capacities of all solid elements decrease greatly with decrease in temperature, approaching a value of zero at absolute zero temperature, when in the crystalline state.
Generally, the heat capacities of compounds are lower in the liquid than in the solid state.
The heat capacity of a heterogeneous mixture is an additive property, but when solutions are formed, this additive property may no longer exist.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
Measurement of the amount of dry gas collected over water from volume of moist gas is based on the
Charle's law.
Dalton's law of partial pressures.
Avogadro's hypothesis.
Boyle's law.
Answer: Option
Explanation:
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5.
In physical adsorption, as compared to chemisorption, the
quantity adsorbed per unit mass is higher.
rate of adsorption is controlled by the resistance to surface reaction.
activation energy is very high.
heat of adsorption is very large.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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