Given a system: A(s)      2B(g) + 3C(g). 
If the concentration of C at eqilibrium is increased by a factor 2, it will cause the eqilibrium concentration of B to change to:

1. two times of its original value

2. one half of its original value

3. 22 times of its original value

4. 122 times of its original value

Subtopic:  Kp, Kc & Factors Affecting them |
 51%
From NCERT
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If little heat is added to ice  liquid equilibrium in a sealed container, then:

1. Pressure will rise                           

2. Temperature will rise

3. Temperature will fall                       

4. No change in P and T

Subtopic:  Kp, Kc & Factors Affecting them |
From NCERT
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In the equilibrium,

2SO2(g) + O2 (g) 2SO3(g), the partial pressure of SO2, O2 and SO3 are 0.662, 0.101 and 0.331 atm respectively. What should be the partial pressure of oxygen so that the equilibrium concentration of SO2 and SO3 are equal.

1. 0.4 atm                   

2. 1.0 atm

3. 0.8 atm                   

4. 0.25 atm

Subtopic:  Kp, Kc & Factors Affecting them |
From NCERT
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For the equilibrium, PCl5  PCl3 + Cl2,

KC=α2/(1-α)V, temperature remaining constant:

1. Kc will increase with the increase in volume

2. Kc will increase with the decrease in volume

3. Kc will not change with the change in volume

4. Kc may increase or decrease with the  change in volume depending upon its numerical value.

Subtopic:  Kp, Kc & Factors Affecting them |
 63%
From NCERT
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In the dissociation of 2HI H2 + I2, the degree of dissociation will be influenced by the:

1. Addition of inert gas at constant volume

2. Addition of inert gas at constant pressure

3. Increase of temperature

4. Increase of pressure

Subtopic:  Kp, Kc & Factors Affecting them |
 59%
From NCERT
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The correct order of increasing [H3O+] in the following aqueous solutions is:

1. 0.01 M H2S < 0.01 M H2SO4<0.01 M NaCl<0.01M NaNO2

2. 0.01 M NaCl< 0.01 M NaNO2<0.01 M H2S< 0.01 M H2SO4

3. 0.01 M NaNO2<0.01 M NaCl<0.01 M H2S<0.01 M H2SO4

4. 0.01 M H2S<0.01 M NaNO2<0.01 M NaCl<0.01 M H2SO4

Subtopic:  Kp, Kc & Factors Affecting them |
 53%
From NCERT
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The pKa of acetylsalicylic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2-3 and the pH in the small intestine is about 8. Aspirin will be:

1. Unionized in the small intestine and in the stomach

2. Completely ionized in the small intestine and in the stomach

3. Ionized in the stomach and almost unionized in the small intestine

4. Ionized in the small intestine and almost unionized in the stomach

Subtopic:  Kp, Kc & Factors Affecting them |
 52%
From NCERT
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For which salt the pH of its solution does not change with dilution?

1. NH4Cl                           

2. CH3COONH4

3. CH3COONa                   

4. None of these

Subtopic:  Kp, Kc & Factors Affecting them |
 51%
From NCERT
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For NH4HS(s) NH3 (g) + H2S(g), the observed pressure for reaction mixture in equilibrium is 1.12 atm at 106°C. The value of Kp for the reaction is:

1. 3.136 atm                          

2. 0.3136 atm2

3. 31.36 atm2                           

4. 6.98 atm2

Subtopic:  Kp, Kc & Factors Affecting them |
 70%
From NCERT
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2 mole of PCl5 were heated in a closed vessel of 2 litre capacity. At equilibrium 40% of PCl5 dissociated into PCl3 and Cl2. The value of the equilibrium constant is :

1. 0.267

2. 0.53

3. 2.63

4. 5.3

Subtopic:  Kp, Kc & Factors Affecting them |
 61%
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