A. Increases
B. Decreases
C. Remains unchanged
D. Unpredictable from the data
Related Mcqs:
- In the gaseous phase ammonia formation reaction (N2 + 3H2 ⇌ 2NH3), the value of the equilibrium constant depends on the_________________?
A. Total pressure of the system
B. Volume of the reactor
C. Temperature
D. Initial concentration of N2 and H2 - A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is ___________________?
A. 0.33
B. 0.5
C. 1
D. Data insufficient, can’t be predicted - The fractional volume change between no conversion and complete conversion, for the isothermal gas phase reaction, 2A → R, is___________________?
A. 0.5
B. -0.5
C. 1
D. 1.5 - The fractional volume change of the system for the isothermal gas phase reaction, A → 3B, between no conversion and complete conversion is___________________?
A. 0.5
B. 1
C. 2
D. 3 - Rate constant for a first order reaction does not depend upon reaction time, extent of reaction and the initial concentration of reactants; but it is a function of reaction temperature. In a chemical reaction, the time required to reduce the concentration of reactant from 100 gm moles/litre to 50 gm moles/litre is same as that required to reduce it from 2 gm moles/litre to 1 gm mole/litre in the same volume. Then the order of this reaction is ?
A. 0
B. 1
C. 2
D. 3 - With increase in initial concentration, the fractional conversion of a first order reaction in a given time___________________?
A. Increases
B. Decreases
C. Remain constant
D. Unpredictable - With an increase in pressure in gaseous phase chemical reactions, the fractional conversion ______________ when the number of moles decreases?
A. Increases
B. Decreases
C. Remain unaffected
D. Unpredictable from the data - A liquid phase reaction is to be carried out under isothermal conditions. The reaction rate as a function of conversion has been determined experimentally and is shown in the figure given below. What choice of reactor or combination of reactors will require the minimum overall reactor volume, if a conversion of 0.9 is desired ?
A. CSTR followed by a PFR
B. PFR followed by a CSTR
C. CSTR followed by a PFR followed by a CSTR
D. PFR followed by a CSTR followed by a PFR - In case of the irreversible unimolecular type, first order reaction, the fractional conversion at any time for constant volume system as compared to variable volume system is___________________?
A. More
B. Less
C. Same
D. Either A. or B., depends on other factors - For the non catalytic reaction of particles with surrounding fluid, the same needed to achieve the same fractional conversion for particles of different unchanging sizes is proportional to the particle diameter, when the ________________ is the controlling resistance?
A. Film diffusion
B. Diffusion through ash layer
C. Chemical reaction
D. Either A., B. or C.
