2.2 Equilibrium and Yield (Part 2 of 4)

What does the constant Kc indicate in a chemical system?

• The position of equilibrium at a given temperature

• The speed of the reaction

• The pressure of the system

• The temperature of the system

If the Kc value equals 1, what can be inferred about the system?

• Reactants are favored

• Products are favored

• Neither reactants nor products are favored

• The reaction does not occur

What does a Kc value greater than 1 indicate?

• Reactants are favored

• Products are favored

• Equilibrium lies to the left

• The reaction is endothermic

How does the magnitude of Kc change with temperature?

• It remains constant

• It decreases as temperature increases

• It increases as temperature increases

• It is independent of temperature

For the reaction N2O4 to 2NO2 + O2, what is the correct expression for KC?

• [N2O4]/([NO2]^2[O2])

• [NO2]^2[O2]/[N2O4]

• [N2O4]^2/([NO2][O2])

• [N2O4]/([NO2][O2])

Given a KC value of 3.71 x 10^2, what does this indicate about the reaction?

• It heavily favors the products

• It does not proceed

• It slightly favors the products

• It heavily favors the reactants

What is the purpose of the 'mice method' in equilibrium calculations?

• To calculate the pressure at equilibrium

• To calculate the speed of the reaction

• To measure the temperature effect on KC

• To determine the change in concentration of reactants and products

What does a KC value of 4.6 x 10^-8 indicate about the reaction?

• The reaction heavily favors the products

• The reaction is in its initial stages

• The KC value is too low to determine the direction of the reaction

• The reaction heavily favors the reactants