(a) State the relationship between the kinetic theory of gases and the ideal gas
ID: 930105 • Letter: #
Question
(a) State the relationship between the kinetic theory of gases and the ideal gas law.
(b) State the postulates of the kinetic theory of gases.
(c) Write down the van der Waals equation of state and explain briey how it takes into
account deviations from ideal gas, with a brief physical explanation of the appropriate terms.
(d) Dene an ideal dilute solution.
(e) State the condition by which we can model a solution as an ideal dilute solution.
(f) Explain why solutes can be modeled by Henry’s Law in an ideal dilute solution.
Explanation / Answer
a)
Kinetic theory of gasses --> higher Energy, higher T, higher collisions, higher P
ideal gas law --> Relationship between Volume, P and T (average kinetic energy)
b)
kinetic theory of gases
heavy gases have lower speed than lightier gases
higher temperature gases contian more kinetic anergy than gases
Temperature is the avg measurement of avg. kinetic energy of a gas
c)
(P+a(n/V)^2)(V -nb) = nRT
a is correction for attraction and b is correction for repulsion forces
d)
ideal dilut solution, any solution that is below 10% (solute vs. solvent)
it may be modeled with reoult / henrys laws
e)
we can model it when acitvities = 1; the concnetration is below 10% and it follows a straight line, i.e. henrys law
f)
henrys law follows a striaght line, which is only valid for very dilute solutions, i.e. X < 10%
there is no plenty interaction between solvent-solute and solute-solute
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