Chemical Reaction

Conversion increases with increase in temperature in case of a/an ______________ reaction?

Byadmin February 23, 2019August 23, 2021

Conversion increases with increase in temperature in case of a/an ______________ reaction?

A. Autocatalytic
B. Irreversible
C. Reversible endothermic
D. Reversible exothermic

Chemical Reaction

The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is (Data: Heat of reaction at 298 K = – 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) ?

The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is (Data: Heat of reaction at 298 K = – 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) ?

A. 400
B. 500
C. 600
D. 1000

Read More The reaction A → B is conducted in an adiabatic plug flow reactor (PFR). Pure A at a concentration of 2 kmol/m3is fed to the reactor at the rate of 0.01 m3 /s and at a temperature of 500 K. If the exit conversion is 20%, then the exit temperature (in k) is (Data: Heat of reaction at 298 K = – 50000 kJ/ kmole of A reacted Heat capacities CPA = CPB = 100kJ/kmole. K (may be assumed to be independent of temperature)) ?
Chemical Reaction

Threshold energy in a reaction is equal to the_________________?

Threshold energy in a reaction is equal to the_________________?

A. Activation energy
B. Normal energy of reactants
C. Sum of A. & B.
D. Neither A. nor B.

Read More Threshold energy in a reaction is equal to the_________________?
Chemical Reaction

Thermodynamic equilibrium constant in a system is affected by___________________?

Thermodynamic equilibrium constant in a system is affected by___________________?

A. Inerts
B. Pressure
C. Temperature
D. All A., B. & C.

Read More Thermodynamic equilibrium constant in a system is affected by___________________?
Chemical Reaction

A space velocity of 5 hr-1 means that ___________________?

A space velocity of 5 hr-1 means that ___________________?

A. Five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour
B. After every 5 hours, reactor is being filled with the feed
C. Cent per cent conversion can be achieved in at least 5 hours
D. A fixed conversion of a given batch of feed takes 5 hours

Read More A space velocity of 5 hr-1 means that ___________________?
Chemical Reaction

If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is_______________________?

If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is_______________________?

A. Not feasible
B. Just feasible
C. Very much feasible
D. Unpredictable as ΔG is no measure of feasibility of a reaction

Read More If ΔG (free energy change) for a chemical reaction is very large and negative, then the reaction is_______________________?
Chemical Reaction

The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

A. K α e-E/RT
B. K α eE/RT
C. K α T . e-E/RT
D. K α √T . e-E/RT

Read More The temperature dependence of reaction rate constant (K) by Arrhenius law is given by_______________?

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