The fractional volume change of the system for the isothermal gas phase reaction

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Question
The fractional volume change of the system for the isothermal gas phase reaction, A → 3B , between no conversion and complete conversion is
Options
A. 0.5
B. 1
C. 2
D. 3

Correct Answer

2

Chemical Reaction Engineering problems

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1. A first order irreversible reaction, A → B is carried out separately in a constant volume as well as in a variable volume reactor for a particular period. It signifies that __________ in the two reactors.
Options
A. both conversion as well as concentration are same
B. conversion in both will be the same but concentrations will be different
C. both the conversion as well as concentrations will be different
D. none of these.

3. A catalyst
Options
A. initiates a reaction.
B. lowers the activation energy of reacting molecules.
C. is capable of reacting with any one of the reactants.
D. can not be recovered chemically unchanged at the end of a chemical reaction.

4. Fractional conversion __________ with increase in pressure for ammonia synthesis reaction i.e., N₂ + 3H₂ ⇌ 2NH₃.
Options
A. increases
B. decreases
C. remains unchanged
D. unpredictable from the data

6. For every 10�C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70�C, the rate of reaction increases __________ times.
Options
A. 8
B. 12
C. 16
D. 32

7. The increase in the rate of reaction with temperature is due to
Options
A. increase in the number of effective collisions.
B. decrease in activation energy.
C. increase in the average kinetic energy of the reacting molecules.
D. none of these.

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