What will happen when the temperature is increased in the following system?

2 HCl (aq) + Mg (s) <--> MgCl₂ (aq) + H₂ (g) + energy

Question 19 options:

	To restore equilibrium the system will shift left.
	To restore equilibrium the system will shift right.
	There will be no effect on the equilibrium.

Question 20 (1 point)

Consider the following equilibrium: A + B C If the value for the equilibrium constant K was found to be 0, then:

Question 20 options:

	the products are in the solid or liquid state.
	reactants are favoured over products.
	products are favored over reactants.
	an error was made; equilibrium constants are always greater than 0.

Question 21 (1 point)

Consider the following equilibrium:

H₂O₂ (g) H₂O (g) + O₂ (g) H = -106 kJ S = +0.058 kJ/K At a temperature of 25^oC, what is the expected composition of the system at equilibrium?

Question 21 options:

	50-90% products
	> 90% reactants
	50-90% reactants
	> 90% products

Question 22 (1 point)

Consider the concentration-time graph of the following equilibrium system:

COF₂ (g) + energy <---> CO (g) + F₂ (g)

Describe the imposed changes made at 15 seconds and 30 seconds (in order).

Question 22 options:

	increase volume, decrease temperature
	decrease concentration of COF2; decrease temperature
	increase volume, increase temperature
	decrease concentration of F2; decrease temperature
	decrease concentration of F2; increase temperature