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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

For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction?

Chemical Reaction /
For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction?

A. XA = k . t
B. [CA0/(1 + εA XA)] (dXA/dt) = k
C. -ln(1 – XA) = kt
D. εA . ln (1 – XA) = k . t

For an isothermal variable volume batch reactor, the following relation is applicable for a first order irreversible reaction? Read More »

Chemical Reaction

What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

Chemical Reaction /
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

A. 0
B. 1
C. 2
D. 3

What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ? Read More »

Chemical Reaction

For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant ?

Chemical Reaction /
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant ?

A. Is independent of pressure
B. Increases with pressure
C. Decreases with pressure
D. Increases /decreases with pressure depending on the stoichiometric co-efficients of the
reaction

For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant ? Read More »

Chemical Reaction

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

Chemical Reaction /
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

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

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)) ?

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)) ?

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

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)) ? Read More »

Chemical Reaction