If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the ________________ diffusion?

Related Mcqs:

Which of the following fixes the volume of a batch reactor for a particular conversion and production rate ?

A. Operating conditions (e.g. pressure and temperature) B. Rate constant C. Density of mixture D. None of these...

For identical flow rate, feed composition and for elementary first order reactions, ‘N’ equal sized mixed reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for constant density systems. This is true, when the value of ‘N’ is ___________________?

A. 1 B. > 1 C. ∞ D. ≥ 1...

The conversion XA and residence time data are collected for zero order liquid phase reaction in a stirred tank reactor. Which of the following will be a straight line ?

A. XA Vs . η B. XA Vs ln η C. XA/(1 – XA)Vs η D. XA(1 – XA)Vs η...

Differential method for analysing the kinetic data is used ___________________?

A. For testing complicated mechanisms B. When the data are scattered C. When rate expressions are very simple D. None of these...

A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m3 and volumetric flow rate 1m3 /h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m3. The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 k.mole/m3, the volume of the mixed flow reactor should be increased by a factor of_______________?

A. 7 B. 6 C. 3 D. 7/3...