Le Chatelier's Principle

Q.

Which of the following are the characteristics of equilibrium?

1. At equilibrium both the reactants and the products coexist
2. The rates of forward and backward reactions become equal at equilibrium
3. Chemical equilibrium is attained in closed systems
4. Chemical equilibrium is dynamic at the molecular level

Q. The effect of increasing the pressure on the equilibrium for the given reaction is
2A + 3B $\rightleftharpoons$ 3C + 2D

1. Backward reaction is favoured
2. No effect
3. It will stop the reaction
4. Forward reaction is favoured

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> What are the characteristics of a chemical equilibrium?

Q. Which of the following factors will not disturb the equilibrium state of the reaction? $H_2\left(g\right)+I_2\left(g\right)+heat\rightleftharpoons 2HI\left(g\right)$

1. Change in temperature
2. Addition of catalyst
3. Addition of $H_2$
4. Addition of $I_2$

Q. Consider the given equilibrium, $2H_{2}O\left(l\right)+heat\rightleftharpoons 2H_2\left(g\right)+O_2\left(g\right)$, which of the following changes will decrease the equilibrium amount of water?

1. Adding more oxygen
2. Increasing the temperature at constant pressure
3. Increasing the pressure at constant temperature
4. Adding catalyst

Q. At what temperature, the volume of '$V^{\prime }$ of a certain mass of gas at ${37}^{o}C$ be doubled? (keeping pressure constant)

1. ${620}^{o}C$
2. ${347}^{o}C$
3. ${527}^{o}C$
4. ${347}^{o}F$

Q.

$\text{A + B}\leftrightharpoons \text{C + D}$

The above reversible reaction is in equilibrium. What will be the effect on chemical equilibrium if the concentration of D is decreased in the system?

1. A backward reaction will be favoured.

2. Equilibrium will shift to increase the reactant concentration.

3. Equilibrium will shift to increase the product concentration.

4. A forward reaction will be favoured.

Q. According to the Le Chatelier's principle, changes in which of the following factor(s) will cause a shift in a chemical equilibrium?

1. Concentration
2. Pressure
3. Temperature
4. Catalyst

Q. According to the Le Chatelier's principle, changes in which of the following factor(s) will cause a shift in a chemical equilibrium?

1. Concentration
2. Pressure
3. Temperature
4. Catalyst

Q. Consider the given equilibrium, $2H_{2}O\left(l\right)+heat\rightleftharpoons 2H_2\left(g\right)+O_2\left(g\right)$, which of the following changes will decrease the equilibrium amount of water?

1. Adding more oxygen
2. Increasing the temperature at constant pressure
3. Increasing the pressure at constant temperature
4. Adding catalyst

Q. The value of $GMV$ at $STP$ is :

1. $22.4m{m}^3$
2. $22.4c{m}^2$
3. $22.4d{m}^3$
4. $22.4m^3$