1988-1999

1991-6-i: Film Thickness


1991-6-i-mt
The diffusion rate of ammonia from an aq.solution to the gas phase is \(10^{-3}\) kmol/m\(^2\).s. The interface equilibrium pressure of \(\ce {NH3}\) is 660 N/m\(^2\) and the concentration of \(\ce {NH3}\) in the gas phase is 5%. If the total pressure is 101 N/m\(^2\), temperature is 295 K and diffusivity of \(\ce {NH3}\) is 0.24 cm\(^2\)/s, the gas film thickness is ____________(\(\mu \)m).
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