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Chemical Reaction

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________?

Chemical Reaction /
The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________?

A. Operational yield
B. Relative yield
C. Selectivity
D. None of these

The ratio of moles of a reactant converted into the desired product to that converted into unwanted product is called_________________? Read More »

Chemical Reaction

If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)?

Chemical Reaction /
If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)?

A. Decreases
B. Increases
C. Remains unaltered
D. Changes unpredictably

If helium is introduced in a reactor containing O2, SO2 and SO3 at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO3 (as per Le Chatelier’s principle)? Read More »

Chemical Reaction

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

Chemical Reaction /
With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ?

A. Decreases
B. Increases
C. Increases linearly
D. Remain same

With increase in K2/K1 in case of a unimolecular type elementary reactions as shown in the bellow figure, the fractional yield of ‘R’ in mixed reactor (for a given conversion of ‘A’) ? Read More »

Chemical Reaction

A space time of 3 hours for a flow reactor means that___________________?

Chemical Reaction /
A space time of 3 hours for a flow reactor means that___________________?

A. The time required to process one reactor volume of feed (measured at specified conditions) is
3 hours
B. Three reactor volumes of feed can be processed every hour
C. It takes three hours to dump the entire volume of the reactor with feed
D. Conversion is cent per cent after three hours

A space time of 3 hours for a flow reactor means that___________________? Read More »

Chemical Reaction

A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m3; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min-1; (ΔH) = – 40kJ/mole; ρ = 1000kg/m3 CP = 4 J/gm.°C ; q = 10-3 m3/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is_________________?

Chemical Reaction /
A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m3; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min-1; (ΔH) = – 40kJ/mole; ρ = 1000kg/m3 CP = 4 J/gm.°C ; q = 10-3 m3/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is_________________?

A. 2/3 kW
B. 1 kW
C. 5/3 kW
D. 4 kW

A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A → R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given: CA0= 5 kmole/m3; XA = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min-1; (ΔH) = – 40kJ/mole; ρ = 1000kg/m3 CP = 4 J/gm.°C ; q = 10-3 m3/min (ρ and CP are same for the reactant and product streams). The amount of heat to be removed is_________________? Read More »

Chemical Reaction

If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship ?

Chemical Reaction /
If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship ?

A. t ∝ 1/an
B. t ∝ 1/an – 1
C. t ∝ 1/an + 1
D. t ∝ an

If n = overall order of a chemical reaction. a = initial concentration of reactant. t = time required to complete a definite fraction of the reaction. Then pick out the correct relationship ? Read More »

Chemical Reaction