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Write the expression for the equilibrium constant, Kc for each of the following reactions: 2NOCl(g)↽−−⇀2NO(g)+ClX2(g)

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प्रश्न

Write the expression for the equilibrium constant, Kc for each of the following reactions:

\[\ce{2NOCl (g) ⇌ 2NO (g) + Cl2 (g)}\]

टीपा लिहा
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उत्तर

`"K"_"c" = (["NO"_(("g"))]^2["Cl"_(2("g"))])/["NOCl"_{("g")}]^2`

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Law of Chemical Equilibrium and Equilibrium Constant
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पाठ 6: Equilibrium - EXERCISES [पृष्ठ २३२]

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एनसीईआरटी Chemistry Part 1 and 2 [English] Class 11
पाठ 6 Equilibrium
EXERCISES | Q 7.4 - (i) | पृष्ठ २३२

संबंधित प्रश्‍न

Write the expression for the equilibrium constant, Kc for the following reactions:

\[\ce{2Cu(NO3)2 (s) ⇌ 2CuO (s) + 4NO2 (g) + O2 (g)}\]


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Write the expression for the equilibrium constant, Kc for the following reactions

\[\ce{I2 (s) + 5F2 ⇌ 2IF5}\]


At 700 K, the equilibrium constant for the reaction

\[\ce{H_{2(g)} + I_{2(g)} ↔ 2HI_{(g)}}\] 

is 54.8. If 0.5 molL–1 of HI(g) is present at equilibrium at 700 K, what are the concentration of H2(g) and I2(g) assuming that we initially started with HI(g) and allowed it to reach equilibrium at 700 K?


Kp = 0.04 atm at 899 K for the equilibrium shown below. What is the equilibrium concentration of C2H6 when it is placed in a flask at 4.0 atm pressure and allowed to come to equilibrium?

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Calculate a) ΔG°and b) the equilibrium constant for the formation of NO2 from NO and O2 at 298 K

\[\ce{NO(g) + 1/2 O_2 (g) <=> NO_2(g)}\]

where ΔfG (NO2) = 52.0 kJ/mol

ΔfG (NO) = 87.0 kJ/mol

ΔfG (O2) = 0 kJ/mol


Predict which of the following reaction will have the appreciable concentration of reactants and products:

  1. \[\ce{Cl2 (g) ⇌ 2Cl (g)}\] Kc = 5 ×10–39
  2. \[\ce{Cl2 (g) + 2NO (g) ⇌ 2NOCl (g)}\] Kc = 3.7 × 108
  3. \[\ce{Cl2 (g) + 2NO2 (g) ⇌ 2NO2Cl (g)}\] Kc = 1.8

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On increasing the pressure, in which direction will the gas phase reaction proceed to re-establish equilibrium, is predicted by applying the Le Chatelier’s principle. Consider the reaction.

\[\ce{N2 (g) + 3H2 (g) ⇌ 2NH3 (g)}\]

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For the reaction : \[\ce{N2 (g) + 3H2 (g) ⇌ 2NH3 (g)}\]

Equilibrium constant `K_C = ([NH3]^2)/([N_2][H_2]^3)`

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Column I (Reaction) Column II (Equilibrium constant)
(i) \[\ce{2N2 (g) + 6H2 (g) ⇌ 4NH3 (g)}\] (a) `2K_c`
(ii) \[\ce{2NH3 (g) ⇌ N2 (g) + 3H2 (g)}\] (b) `K_c^(1/2)`
(iii) \[\ce{1/2 N2 (g) + 3/2 H2 (g) ⇌ NH3 (g)}\] (c) `1/K_c`
  (d) `K_c^2`

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Column I Column II
(i) ∆GΘ > 0 (a) K > 1
(ii) ∆GΘ > 0  (b) K = 1
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  (d) K < 1

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For which of the following Kp is less than Kc?


The decomposition of N2O4 to NO2 was carried out in chloroform at 280°C. At equilibrium, 0.2 mol of N2O4 and 2 × 10−3 mol of NO2 were present in 2 ℓ of the solution. The equilibrium constant for the reaction \[\ce{N2O4 <=> 2NO2}\] is ______.


The value of Kc is 64 at 800 K for the reaction \[\ce{N2(g) + 3H2(g) <=> 2NH3(g)}\].

The value of Kc for the following reaction is:

\[\ce{NH3(g) <=> 1/2N2(g) + 3/2H2(g)}\]


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