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February 2019

For the liquid phase parallel reactions__________________?

Chemical Reaction /
For the liquid phase parallel reactions__________________?

R, rR = K1.CA2; E1 = 80 KJ/mole
S, rs = K1.CA ; E2 = 120 KJ/mole
The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted
at
A. Low temperature in a CSTR
B. High temperature in a CSTR
C. Low temperature in a PFR
D. High temperature in a PFR

For the liquid phase parallel reactions__________________? Read More »

Chemical Reaction

For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________?

Chemical Reaction /
For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________?

A. 1
B. -0.5
C. -0.25
D. 0

For the gaseous reaction 2A → B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is___________________? Read More »

Chemical Reaction

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?

Chemical Reaction /
With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________?

A. Increase
B. Decrease
C. Remain same
D. Data in insufficient; can’t be predicted

With increase in the space time of an irreversible isothermal reaction being carried out in a P.F. reactor, the conversion will________________? Read More »

Chemical Reaction

If the rate of a chemical reaction becomes slower at a given temperature, then the__________________?

Chemical Reaction /
If the rate of a chemical reaction becomes slower at a given temperature, then the__________________?

A. Initial concentration of the reactants remains constant
B. Free energy of activation is lower
C. Entropy changes
D. Free energy of activation is higher

If the rate of a chemical reaction becomes slower at a given temperature, then the__________________? Read More »

Chemical Reaction