Equilibrium - Definition, Classification

This is an MCQ-based quiz on the topic of Equilibrium - Definition, Classification.

This includes Equilibrium in Physical changes, Equilibrium in Chemical changes, Characteristics of Equilibrium states, Related topics on chemical equilibrium, Ionic equilibrium, Related topic on ionic equilibrium, and many more.

Start Quiz

A weak acid HX has the dissociation constant 1 × 10^-5 M. It forms a salt NaX on reaction with alkali. The degree of hydrolysis of 0.1 M solution of NaX will be

0.0001% 0.01% 0.1% 0.15%

Concentration of the Ag+ ions in a saturated solution of Ag2C2O4 is 2.2 x 10^-4 mol L-1. Solubility product of Ag2C2O42 is

2.66 × 10^-12 4.5 × 10^-11 5.3 × 10^-12 2.42 × 10^-8

In a reversible chemical reaction at equilibrium, if the concentration of any one of the reactants is doubled, then the equilibrium constant will

Also be Doubled Be Halved Remain the Same Become One-Fourth

When a neutral atom undergoes oxidation, the atoms oxidation state

Decreases as it gains electrons Decreases as it loses electrons Increases as it gains electrons Increases as it loses electrons

Concentration of the Ag-4 ions in a saturated solution of Ag2C2O4 is 2.2 × 10-4 mol L-1. Solubility product of Ag2C2O4 is

4.5 × 10^-11 2.66 × 10^-12 5.3 × 10^-12 2.42 × 10^-8

Among the following the weakest Bronsted base is

F– Cl– Br– I–

A certain buffer solution contains equal concentration of X– and HX. The ka for HX is 10^-8. The pH of the buffer is

3 8 11 14

What happens when an inert gas is added to an equilibrium keeping volume unchanged?

More product will form Less product will form More reactant will form Equilibrium will remain unchanged

Which of the following statements are correct regarding Arrhenius theory of acid and base?

Both This theory was applicable to only aqueous solutions This theory was applicable to all solutions None of these

BF3 is an acid according to

Lewis Concept Arrhenius concept Bronsted-Lowry concept None of these

Which one of the following information can be obtained on the basis of Le Chatelier principle?

Shift in equilibrium position on changing value of a constraint Equilibrium constant of a chemical reaction Entropy change in a reaction Dissociation constant of a weak acid

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled then the equilibrium constant will

Remain the same Be halved Also be doubled Become one-fourth

Find the conjugate acid of NH2–

NH3 NH4OH NH4+ NH2–

Select the incorrect statement

For the triple point of water, 1°K is equal to 1/273.16. The first law of thermodynamics is also known as the law of thermal equilibrium The triple point of water is one of the reference points on the thermodynamic scale of temperature At room temperature, the heat of combustion is not found

On increasing the concentration of reactants in a reversible reaction, then equilibrium constant will

Depend on the concentration

Increase

Unchanged

Decrease

In an experiment three watch glasses containing separately 1mL each of acetone, ethyl alcohol, and water are exposed to atmosphere and the experiment with different volumes of the liquids in a warmer room is repeated, it is observed that in all such cases the liquid eventually disappears and the time taken for complete evaporation in each case was different. The possible reason is/are

All of the above

The temperature is different

The amount of the liquids is different

The nature of the liquids is different

On doubling P and V with constant temperature the equilibrium constant will

Remain constant

Become one-fourth

Become double

None of these

The reaction quotient Q is used to

Predict the direction of the reaction

Calculate equilibrium concentrations