Homogeneous Equilibria

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Homogeneous Equilibria: Overview

This topic consists of various concepts like Equilibrium Constant in Terms of Partial Pressure,Homogeneous Equilibrium,, etc.

Important Questions on Homogeneous Equilibria

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When 3.06g of solid NH4HS is introduced into a two litre evacuated flask at  27°C,30% of the solid decomposes into gaseous ammonia and hydrogen sulphide.

The values of  Kc  and  Kp  for the reaction at 27°C  would be:

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Physical state of reaction & products For the reaction,   CO(g) + Cl 2 (g)   COCl 2 (g), the  K p K c  is equal to

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For the reaction

 2NO2(g)2NO(g)+O2(g)(Kc=1.8×10-6 at 184°C)(R=0.0831 kJ/(mol.K))

When  Kp and  Kc are compared at   184°C it is found that –

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Predict the shift in equilibrium when the volume is decreased on the following equilibrium reactions: N2g+O2g2NOg.

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Predict the shift in equilibrium when the volume is decreased on the following equilibrium reactions: PCl3g+Cl2gPCl5g.

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Apply the law of mass action to the following equilibria: Formation of NO2 from nitric oxide and oxygen.

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Apply the law of mass action to the following equilibria: Formation of SO3 from SO2 and O2.

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What is the relationship between Kp​ and Kc​ for a general chemical equilibrium reaction ?

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What happens when you increase the partial pressure of a reaction ?

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For a reaction A(g)B(g) at equilibrium, the partial pressure of B is found to be one-fourth of the particle pressure of A. The value of ΔG° of the reaction AB is

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Which of the following is an example of homogeneous equilibrium?

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Explain homogeneous equilibrium with the help of an example.

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For the reaction, N2O4(g)2NO2(g) the values of Kp and Kc are found to be 85.87 bar and 2.6 mol L-1 respectively. Find the temperature at which the reaction is carried out.

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For the reaction A(g)+ B(s)C(g)+D(g), Kc = 42 mol dm-3 at 120°C. Calculate Kp

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Explain homogeneous equilibrium with the help of an example.

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N2O4 is 25% dissociated at 37° C and 1atm pressure. Calculate Kp for the reaction, N2O4g           2NO2g.

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Give an example of a reaction, where Kp=Kc.

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Write the expression for the equilibrium constant Kc for the following reaction:

CH3COOHaq+CH3OHaq             CH3COOCH3aq+H2Ol

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What is a homogeneous equilibrium?

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White solid balls of naphthalene (C10H8) used as moth balls were kept in a closed container at room temperature (270 C). The vapour pressure above the balls was found to be 0.10 mm Hg

The value of Kc for the sublimation equilibrium, C10H8 (s)C10H8 (v) is