If Kp of the reaction A(g)+2B(g)3C(g)+D(g) is 0.05 at 1000 K, then the value of Kc of the reaction

1. 20000 R

2. 0.02 R

3. 5×10-5R

4. 5×10-5R

Subtopic:  Kp, Kc & Factors Affecting them |
 85%
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The reaction PCl5(s)PCl3(g)+Cl2(g) is in equilibrium. If the equilibrium concentration of PCl3(g) is doubled, then the concentration of Cl2(g) would become

1. 1/2 of its initial value

2. 1/4 of its initial value

3. four times of its initial value

4. two times of its initial value

Subtopic:  Introduction To Equilibrium |
 78%
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In the reaction, the equilibrium concentrations of PCl5 and PCl3 are 0.4 and 0.2 mole/liter respectively. If the value of Kc is 0.5, what is the concentration of Cl2 in mole/liter?

1. 2.0

2. 1.5

3. 1.0

4. 0.5

Subtopic:  Ionisation Constant of Acid, Base & Salt |
 84%
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4 moles each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel. At equilibrium, 25% of O2 is used up. The total number of moles of all the gases at equilibrium is

1. 6.5

2. 7.0

3. 8.0

4. 2.0

Subtopic:  Introduction To Equilibrium |
 67%
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For the reversible reaction,

N2(g)+3H2(g)⇌2NH3(g)

At 500°C, the value of Kp is 1.44×10-5 when partial pressure is measured in atmospheres. The corresponding value of Kc, with concentration in mole L-1, is

1. 1.44×10-5(0.082×500)-2

2. 1.44×10-5/(8.314×773)-2

3. 1.44×10-5(0.082×773)-2

4. 1.44×10-5/(0.082×773)-2

Subtopic:  Kp, Kc & Factors Affecting them |
 63%
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If N2O4 is dissociation to 33% and 40% at total pressure P1 and P2 atm respectively. The ratio of P1P2 is

1. 85

2. 58

3. 95

4. 59

Subtopic:  Kp, Kc & Factors Affecting them |
 54%
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For which of the following reaction, Kp=Kc?

1. 2NOCl(g)2NO(g)+Cl2(g)

2. N2(g)+3H2(g)2NH3(g)

3. H2(g)+Cl2(g)2HCl(g)

4. PCl3(g)+Cl2(g)PCl5(g)

Subtopic:  Kp, Kc & Factors Affecting them |
 91%
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In which of the following reactions, equilibrium is independent of pressure?

1. N2(g)+O2(g)2NO(g); H=+ve

2. 2SO2(g)+O2(g)2SO3(g); H=-ve

3. 3H2(g)+N2(g)2NH3(g); H=-ve

4. PCl5(g)PCl3(g)+Cl2(g); H=+ve

Subtopic:  Kp, Kc & Factors Affecting them |
 86%
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The equilibrium constant of mutarotation of α-D-glucose to β-D-glucose is 1.8. What percent of the α-form remains under equilibrium?

1. 35.7

2. 64.3

3. 55.6

4. 44.4

Subtopic:  Introduction To Equilibrium |
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For a gaseous equilibrium

2A(g)2B(g)+C(g), Kp has a value of 1.8 at 700 K. What is the value of Kc for the equilibrium 2B(g)  +  C(g)    2A(g)  at the same pressure?

1. 0.031

2. 1.3×10-3

3. 44.4

4. 38

Subtopic:  Kp, Kc & Factors Affecting them |
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