In case of physical adsorption, the heat of adsorption is of the order of _____________ kcal/kg mole?

Related Mcqs:

The rate expression for a heterogeneous catalytic reaction is given by, – rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A) ?

A. E B. E + ΔHA C. E + ΔHA – ΔHR) D. ΔHA + ΔHR...

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst___________________?

A. Porosity is very important B. Porosity is of less importance C. Internal surface area is utilised efficiently D. None of these...

For the reaction as shown in the bellow figure, the rate of formation of Z is 0.2 gm mole/litre.hr. What is the rate of disappearance of X in gm mole/litre.hr ?

A. 0.4 B. 0.1 C. 0.2 D. None of these...

For a tubular flow reactor with uniform concentration and temperature, the independent variable is___________________?

A. Time B. Length C. Diameter D. None of these...

In Langmuir treatment of adsorption,_________________?

A. Whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule B. Whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site C. All the adsorption does not take place by the … In Langmuir treatment of adsorption,_________________?Read More...