The units of frequency factor in Arrhenius equation_________________?

Byadmin February 23, 2019August 23, 2021

The units of frequency factor in Arrhenius equation_________________?

A. Are the same as those of the rate constant
B. Depend on the order of the reaction
C. Depend on temperature, pressure etc. of the reaction
D. Are cycles per unit time

Chemical Reaction

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?

The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?

A. Increased temperature reduces the activation energy
B. Fraction of molecules having threshold energy increases
C. Collision frequency increases
D. Value of threshold energy decreases

Read More The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the_________________?
Chemical Reaction

The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an _______________ reaction?

The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an _______________ reaction?

A. Elementary
B. Non-elementary
C. Parallel
D. Autokinetic

Read More The reaction in which the rate equation corresponds to a stoichiometric equation, is called a/an _______________ reaction?
Chemical Reaction

In an ideal P.F.R. at steady state conditions ___________________?

In an ideal P.F.R. at steady state conditions ___________________?

A. The composition of reactants remains constant along a flow path
B. The conversion of the reactant varies from point to point along a flow path
C. There is no lateral mixing of fluid
D. There may be diffusion along the flow path

Read More In an ideal P.F.R. at steady state conditions ___________________?
Chemical Reaction

For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to ____________________?

For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to ____________________?

A. 0
B. 1
C. 0.1
D. 0.5

Read More For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to ____________________?
Chemical Reaction

The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is________________?

The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is________________?

A. ∞
B. 0
C. 1
D. > 1

Read More The ratio of volume of mixed reactor to the volume of P.F.R. (for identical flow rate, feed composition and conversion) for zero order reaction is________________?
Chemical Reaction

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

A. nD = (n + 1)/2
B. nD = n/2
C. nD = n + 1
D. None of these

Read More When the reaction is dominated by intraparticle diffusion, the apparent order of reaction (nD) as measured is related to the true order (n) as ________________?

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