If in the gaseous phase reaction, N2O4 ⇌ 2NO2, x is the part of N2O4 which dissociates, then the number of molecules at equilibrium will be___________________?

Byadmin February 23, 2019August 23, 2021

If in the gaseous phase reaction, N2O4 ⇌ 2NO2, x is the part of N2O4 which dissociates, then the number of molecules at equilibrium will be___________________?

A. (1 + x)
B. (1 – x)
C. (1 + x)2
D. (1 – x)2

Chemical Reaction

A catalyst in a chemical reaction _______________ free energy change in the reaction?

A catalyst in a chemical reaction _______________ free energy change in the reaction?

A. Increases
B. Decreases
C. Either A. or B.; depends on the type of catalyst
D. Neither A. nor B.

Read More A catalyst in a chemical reaction _______________ free energy change in the reaction?
Chemical Reaction

The eddy diffusivity for a liquid in plug flow must be_________________?

The eddy diffusivity for a liquid in plug flow must be_________________?

A. 1
B. 0
C. ∞
D. Between 0 and 1

Read More The eddy diffusivity for a liquid in plug flow must be_________________?
Chemical Reaction

In the reversible reaction of the type, A + B ⇌ AB, in general__________________?

In the reversible reaction of the type, A + B ⇌ AB, in general__________________?

A. Both forward and backward reactions will be exothermic
B. Neither of the reactions will be endothermic
C. The combination reaction will be exothermic, while the dissociation reaction will be
endothermic
D. The combination reaction will be endothermic, while the dissociation reaction will be
exothermic

Read More In the reversible reaction of the type, A + B ⇌ AB, in general__________________?
Chemical Reaction

Concentration of the limiting reactant (with initial concentration of a moles/litre) after time t is (a-x). Then ‘t’ for a first order reaction is given by____________________?

Concentration of the limiting reactant (with initial concentration of a moles/litre) after time t is (a-x). Then ‘t’ for a first order reaction is given by____________________?

A. k. t = ln a/(a – x)
B. k. t = x/a (a – x)
C. k. t = ln (a – x)/a
D. k. t = ln a (a – x)/x

Read More Concentration of the limiting reactant (with initial concentration of a moles/litre) after time t is (a-x). Then ‘t’ for a first order reaction is given by____________________?
Chemical Reaction

What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?

What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?

A. Zero
B. First
C. Second
D. Third

Read More What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?
Chemical Reaction

The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?

The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?

A. CA = 1.2 CA0 (1 – X)/(1 – 0.33X)
B. CA = 1.2 CA0 (1 – X)/(1 – 0.5X)
C. CA = 0.83 CA0 (1 – X)/(1 – 0.33X)
D. CA = 0.83 CA0 (1 – X)/(1 – 0.5X)

Read More The following gas phase reaction is taking place in a plug flow reactor. A stoichiometric mixture of A and B at 300 K is fed to the reactor. At 1 m along the length of the reactor, the temperature is 360 K. The pressure drop is negligible and an ideal gas behaviour can be assumed. Identify the correct expression relating the concentration of A at the inlet (CA0), concentration of A at 1m (CA) and the corresponding conversion of A (X) ?

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