Which one of the following information can be obtained on the basis of Le-Chatelier's principle ?
Dissociation constant of a weak acid
Entropy change in a reaction
Equilibrium constant of a chemical reaction
Shift in equilibrium position on changing values of a constant
The equilbrium constants for the reaction at 500 K and 700 K are 1 × 10-10 and 1 × 10-5 . The given reaction is
exothermic
slow
endothermic
fast
In the two gaseous reactions (i) and (ii) at 250o C.
the equilibrium constants K1 and K2 are related as
The dissociation constants for acetic acid and HCN at 25o C are 1.5 × 10-5 and 4.5 × 10-10 , respectively. The equilibrium constant for the equilibrium,
would be
3.0 × 103
3.0 × 10-5
3.0 × 104
3.33 × 104
Reaction In equilibrium condition, pressure of O2 depends on
increased mass of BaO2
increased mass of BaO
increased temperature of equilbrium
increased mass of BaO2 and BaO both
If is the fraction of HI dissociated at equilibrium in the reaction, starting with the 2 moles of HI, then the total number of moles of reactants and products at equilirbrium are
2
For the reaction,
Which of the following statements is not true ?
At equilibrium, the concentrations of CO2 (g) and H2O(l) are not equal.
The equilibrium constant for the reaction is given by
Addition of CH4 (g) or O2 (g) at equilibrium will cause a shift to the right
The reaction is exothermic
For a reversible reaction, if the concentration of the reactants are doubled, the equilibrium constant will be
one-fourth
halved
doubled
the same
The following equilibria are given
The equilibrium constant of the reaction in terms of K1, K2 and K3 is
K1,K2,K3
The value of equilibrium constant of the reaction
The equilibrium constant of the reaction
16
