Maurice Tutor

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    Argosy University/ Phoniex University/
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Category > Management Posted 09 Feb 2018 My Price 5.00

cylindrical graphite

A cylindrical graphite (pure carbon) rod of length 25 cm and initial diameter of 2 cm is inserted into a flowing air stream at 1100 K and 2 atm total pressure. The flowing gas creates a stagnant gas boundary layer 5 mm thick around the external surface of the rod. At this high temperature, the solid carbon oxidizes to carbon dioxide, CO2, gas

 

 

The oxidation reaction is limited by the molecular diffusion of O2 through the stagnant gas film surrounding the surface of the rod. Outside of the gas film, the bulk composition of the air stream prevails.

 

a. Estimate the initial rate of CO2 production from the rod, assuming that the surface reaction is diffusion limited.

b. How long will it take for the rod to disappear? The density of solid graphite is 2:25 g/cm3.

Answers

Maurice Tutor
(5)
Status NEW Posted 09 Feb 2018 08:02 PM My Price 5.00

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