Diffusion and ChE Laws Flashcards
The Fick’s Law of Diffusion gives the rate of diffusion based on
Concentration driving force
In a steady equimolar counter diffusion, the following is true
A. Nb=O; Na is constant
B. Na=0; Nb is non-zero
C. Na=-Nb; Na+Nb=0
D. Na+Nb=constant
C. Na=-Nb; Na+Nb=0
The enrichment of ethyl alcohol in the vapor phase from an aqueous ethyl alcohol solution during rectification is an example of
Equimolar diffusion
Ammonia being absorbed from air intro water is an example of
Steady state unicomponeny diffusion
For a gas ohase, unicomponent diffusion through a gas-liquid interface will likely occur if
One component is soluble and the other is not
Molecular diffusivity of a liquid
Increases with temperature
It represents the total mass transferred to mass transferred by molecular diffusion
Sherwood number
Which of the following is true about the rate of mass transfer in liquid?
A. Na=Kg(Pa2-Pa1)
B. Na=Kg(Ca2-Ca1)
C. Na=Kc(Pa2-Pa1)
D. Na=Kc(Ca2-Ca1)
D. Na=Kc(Ca2-Ca1)
For turbulent mass transfer in pipes, the Sherwood Number depends on the Reynolds number as
Re^0.83
A dimensionless number that represents the ratio of the molecular momentum diffusivity to the molecular mass diffusivity
Schmidt Number
An act regulating the practice of chemical engineering
Chemical Engineering Law of 2004
The Chemical Engineering Law of 2004 is otherwise known as
RA 9297
How many articles does RA 9297 have?
5
How many sections does RA 9297 have?
39
According to section 35 of RA 9297, “Any person who shall violate any of the provisions of this Act shall be guilty of misdemeanor and shall, upon conviction, be sentenced to a fine not less than _____ nor more than _____ or imprisonment for a period of not less than 6 months nor more than 5 years or both at the discretion of the Court.”
Php10,000; Php10,000,000
