An " instantaneous" reaction C(s) + O2(g) → CO2(g) occurs at the surface of the particle when the spherical coal particl

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An " instantaneous" reaction C(s) + O2(g) → CO2(g) occurs at the surface of the particle when the spherical coal particl

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An Instantaneous Reaction C S O2 G Co2 G Occurs At The Surface Of The Particle When The Spherical Coal Particl 1
An Instantaneous Reaction C S O2 G Co2 G Occurs At The Surface Of The Particle When The Spherical Coal Particl 1 (27.15 KiB) Viewed 35 times
An " instantaneous" reaction C(s) + O2(g) → CO2(g) occurs at the surface of the particle when the spherical coal particle of 0.05 in. diameter burns in air at 2500°F. If the coal consists of pure carbon of 85 lbm/ft³ density and the mass diffusivity of oxygen in the mixture is 8 ft2/hr, then calculate the time required to burn the coal completely. Given: Gas law constant R = 0.7302 ft³ atm/lbmol. R The mole fraction of oxygen in the air = 0.21
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