Applications of Equilibrium Constant

IMPORTANT

Applications of Equilibrium Constant: Overview

This Topic covers sub-topics such as Applications of Equilibrium Constants, Predicting Extent of Reaction, Predicting Direction of Reaction, Degree of Dissociation for Equilibrium Reactions and, Calculating Composition of Equilibrium Mixture

Important Questions on Applications of Equilibrium Constant

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IMPORTANT

A(g)2 B( g)+C(g)

For the given reaction, if the initial pressure is 450 mmHg and the pressure at time t is 720 mmHg at a constant temperatureT and constant volume V. The fraction of A(g) decomposed under these conditions is x×10-1. The value of x is (nearest integer)

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For a chemical reaction A+Bproducts, the order is one with respect to each A and B. The sum of x and y from the following data is

 
Rate
(mol l1s1)
[A]
(mol l1)
[B]
(mol l1)
0.10 0.20 0.05
0.40 x 0.05
0.80 0.40

y

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The equilibrium constant for the reaction

 CO(g)+H2O(g)CO2(g)+H2(g) is 4.0 at 1000K. When equimolar mixtures of CO and H2O are heated to 1000K the percentage of CO2 formed at equilibrium is 

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102 g of solid NH4HS is taken in the 2 L evacuated flask at 57°C. Following two equilibrium exist simultaneously.

NH4HS(s)  NH3(g) + H2S(g)NH3(g)  12N2(g) + 32H2(g)

One mole of the solid decomposes to maintain both the equilibrium and 0.75 mol of H2 was found at the equilibrium then find the equilibrium concentration of all the species and Kc for both the reaction.

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What is the effect of volume change on equilibrium constant ?

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5 moles of SO2 and 5 moles of O2 react in a closed vessel. At equilibrium 60% of the SO2 is consumed. The total number of gaseous moles (SO2, O2 and SO3) in the vessel is:

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The equilibrium constant for the reaction between CH4 (g) and H2S (g) to form CS2 (g) and H2 (g), at 1173 K is 3.6. For the following composition of the reaction mixture, decide which of the following option is correct?
[CH4]=1.07 M, [H2S]=1.20 M, [CS2]=0.90 M , [H2]=1.78 M

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A mixture of NO2 and N2O4 has a vapour density of 38.3 at 300 K. What is the number of moles of NO2 in 100 g of the mixture?

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Column I Column II
(A)                Cu  +        2 Ag+               Cu2+      +  2 Ag Concs:             3·0×10-9 M        1·8×10-2 MEquilibrium const.=2.0×1015 (p) Reaction will shift forward
(B)                H2  +       I2                2HI  Concs. 10-2   3·0×10-2        2·0×10-2 (Moles)
Volume of vessel=2 L
Equilibrium constant=50.5
(q) Reaction will shift backward
(C)                     N2 + 3H2  2NH3Pressures 0·5     3·0         0·5 (atm)
Kp=4.28×10-5
(r) Reaction is in equilibrium
(D) PCl5  PCl3 + Cl2
Helium gas is added to the reaction mixture at equilibrium keeping the pressure constant.
(s) Reaction may shift in the forward
or backward direction.

 

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The equilibrium constant for the reaction between CH4 (g) and H2S (g) to form CS2 (g) and H2 (g), at 1173 K is 3.6. For the following composition of the reaction mixture, decide which of the following option is correct?
[CH4]=1.07 M, [H2S]=1.20 M, [CS2]=0.90 M , [H2]=1.78 M

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What is the main purpose of practicing gratitude in the context of enhancing positive emotions?

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What is the impact of a price floor set above the equilibrium price?

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In a market with free entry and exit, what happens to economic profits in the long run?

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What is the primary condition for market equilibrium in a market with a fixed number of firms?

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When the market is in equilibrium with a fixed number of firms, what does the equilibrium price ensure?

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In a market with a fixed number of firms, if the market price is above the equilibrium price, what would be the result?

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What is the term used to describe the price at which the quantity demanded equals the quantity supplied?

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If production technology improves, how is the market supply curve affected in a perfectly competitive market?

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What does the market supply curve illustrate in a perfectly competitive market?

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Which factor affecting depreciation is directly related to the usage of the asset?