If the concentration of OH- ions in the reaction is decreased by times, then equilibrium concentration of Fe3+ will increase by
8 times
16 times
64 times
4 times
The rate of reaction depends upon the
volume
force
pressure
conc of reactants
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
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
If K1 and K2 are the respective equilbrium constants for the two reactions
The equilibrium constant of the reaction
will be
K1 / (K2 )2
K1 . K2
K1 / K2
K2 / K1
The reaction quotient (Q) for the reaction . The reaction will proceed towards right side if
Q > Kc
Q = 0
Q = Kc
Q < Kc
In the two gaseous reactions (i) and (ii) at 250o C.
the equilibrium constants K1 and K2 are related as
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
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
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
