Homogeneous Equilibria

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Homogeneous Equilibria: Overview

This topic covers concepts, such as, Homogeneous Equilibrium & Equilibrium Constant in Terms of Partial Pressure 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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2SO2(g)+O2(g)2SO3(g)

It is an example of _____ (homogeneous/ heterogeneous) equilibrium?

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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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Ratio of Kp/Kc of the reaction 2SO2 + O22SO3 is equal to _____. (write the answer in the form of a/b).

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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

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In the following reaction, combustion of hot copper turnings can be used as an oxygen getter for inert gas supplies by slowly passing the gas over the turnings at a temperature of 600 K.

2Cus+12O2gCu2Os;KP=7.5×1010 atm-1/2

After equilibrium has reached, how many number of molecules of O2 per litre left?

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Consider the equilibrium reaction  P4(g)2P2(g)where KP = 4 atm at 1325 K. In an experiment where P4(g) was placed in a container at 1325 K, the equilibrium mixture of P4(g) and P2(g) has a total pressure of 1.0 atm. The equilibrium partial pressure of P2(g) will be

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For the following reaction; 2NO2(g)2NO(g)+O2(g), Kc=1.8×106 at 184oC and R=0.83 L atm  K-1mol-1 when Kp and Kc are compared at 184oC. It is found that:

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The density of an equilibrium mixture of N2O4 and NO2 at 1 atm  is 3.62 g/litre at 288 K and 1.84 g/litre at 348 K. Calculate the enthalpy of reaction in calories.

Give an answer to the nearest integer value.