An incorrect statement about equilibrium among the following is:

1. Equilibrium is possible only in a closed system at a constant temperature.
2. All measurable properties of the system remain constant.
3. All the physical processes stop at equilibrium.
4. The opposing processes occur at the same rate and there is a dynamic but stable condition.
Subtopic:  Introduction To Equilibrium |
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For the given reaction:
H2NCOONH4 (s) \( \rightleftharpoons\) 2NH3 (g) + CO2 (g),
total pressure at equilibrium is found to be 18 atmospheres. The value of Kp for the above equilibrium will be:

1. 72 atm3

2. 144 atm3

3. 432 atm3

4. 864 atm3

Subtopic:  Introduction To Equilibrium |
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Identify that is NOT an example of heterogeneous equilibrium:

 
1. Equilibrium between water vapour and liquid water in a closed container
2. Equilibrium attained during acid catalysed hydrolysis of ethyl acetate
3. Equilibrium between solid Ca(OH)2 and its saturated solution
4. Equilibrium attained on heating solid CaCO3 in a closed container
Subtopic:  Introduction To Equilibrium |
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P, Q, and R represent substances involved in a gaseous reaction.
The equilibrium constant (Kc ) and the sign of the enthalpy change for the reaction are: 

 \(K_c = \frac{[P]^2}{[Q][R]3}~~~~~~\Delta H ~ is ~negative \) 

Assuming that all other conditions remain constant, a change in which factor results in an increase of the value of the equilibrium constant, Kc?

1. an increase in pressure
2. use of a suitable catalyst
3. a decrease in temperature
4. an increase in temperature
Subtopic:  Introduction To Equilibrium |
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For the reaction, A+B ⇌ 3C at 25° C, a 3 litre vessel contains 1, 2, and 4 mole of A, B and C respectively. If Kc for the reaction is 10, then the reaction will proceed in:

1. forward direction                           

2. backward direction

3. in either direction                           

4. in equilibrium

Subtopic:  Introduction To Equilibrium |
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