Q. No.An incorrect statement about equilibrium among the following is:
| 1. | Equilibrium is possible only in a closed system at a given 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. |
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
| 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 |
The value of for the reaction is less than zero. Formation of will be favoured at:
1. Low pressure and low temperature
2. High temperature and low pressure
3. High pressure and low temperature
4. High temperature and high pressure
1. \(N_2 (g) + 3H_2 (g)\rightleftharpoons 2NH_3 (g)\)
2. \(PCl_5 (g) \rightleftharpoons PCl_3 (g) + Cl_2 (g)\)
3. \(H_2(g) + I_2 (g) \rightleftharpoons 2HI (g)\)
4. None of these
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
The following equilibrium constants are given:
N2 + 3H2 ⇌ 2NH3; K1
N2 + O2 ⇌ 2NO; K2
H2 + 1/2O2 ⇌ H2O; K3
The equilibrium constant for the oxidation of NH3 by oxygen to give NO is:
1.
2.
3.
4.
Hydrolysis of sucrose gives,
Sucrose + H2O Glucose + Fructose
The equilibrium constant Kc for the reaction is 2 ×1013 at 300K. The value of ∆G⊖ at 300K is-
1. – 5.64 ×104 J mol–1
2. – 7.64 ×104 J mol–1
3. – 6.64 ×104 J mol–1
4. – 8.64 ×104 J mol–1
For the equilibrium,
2NOCl(g) 2NO(g) + Cl2(g)
the value of the equilibrium constant, Kc is 3.75 × 10–6 at 1069 K.
The value of Kp for the reaction at this temperature is-
1. 0.048
2. 0.67
3. 0.29
4. 0.033
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
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