Quiz | Chemical Equilibrium

1

Which of the following statements about the equilibrium constant is correct?

It changes with changes in the temperature

It changes by the addition of a catalyst

It always remains the same at different reaction conditions

It increases if the concentration of one of the reactants or products is increased

2

Which of the following statements is correct?

At the equilibrium, sum of [reactant] = sum of [product]

At the equilibrium the forward and reverse reactions still occur

A chemical equilibrium can be attained only starting from a mixture

Chemical equilibrium is a static equilibrium, [reactant] = constant and [product] = constant

3

What is the equilibrium constant expression KC of the reaction: N(g) + 3 H(g)  2 NH(g)?

N2H2NH3

NH3N2H2

N2H23NH32

NH32N2H23

4

What is the equilibrium constant expression KC of the reaction: 2 ICl (s)  I(s) + Cl(g)?

[Cl2]

I2ICl2

Cl2I22 ICl

Cl2I2ICl2

5

How can we increase the total amount of produced Cl2 during the reaction: 2 ICl (s)  I(s) + Cl(g)?

By adding more ICl

By increasing the pressure

By removing the Cl2 as it is formed

By decreasing the volume of the container

6

What happens when the reaction quotient QC is less than the equilibrium constant K?

The reaction will move to the left

The reaction will move to the right

It depends on whether the reaction is endothermic or exothermic

It depends on the reaction conditions