Haber Process and Equilibrium Concepts

The video tutorial explains how changes in temperature affect the equilibrium constant (KC) and the direction of chemical reactions. It covers the Harber process, highlighting that an increase in temperature favors the endothermic reverse reaction, reducing ammonia yield. Conversely, decreasing temperature favors the exothermic forward reaction, increasing ammonia yield. The tutorial also discusses how temperature changes impact the KC value, with exothermic reactions shifting equilibrium left and decreasing KC, while endothermic reactions shift equilibrium right and increase KC.

What happens to the equilibrium constant KC when the temperature changes?

• It changes because KC is temperature dependent.

• It remains constant.

• It only changes for endothermic reactions.

• It only changes for exothermic reactions.

In the Haber process, what is the nature of the forward reaction?

• Endothermic

• Neither

• Neutral

• Exothermic

What is the enthalpy change for the reverse reaction in the Haber process?

• Negative 41 KJ per mole

• Zero

• Positive 92.4 K per mole

• Negative 92.4 K per mole

What is the effect of increasing temperature on the yield of ammonia in the Haber process?

• The yield remains the same.

• The yield doubles.

• The yield decreases.

• The yield increases.

How does decreasing temperature affect the equilibrium in the Haber process?

• Remains unchanged

• Shifts to the right

• Shifts to the left

• Shifts to both sides

For an exothermic reaction, what happens to KC when the temperature is increased?

• KC doubles

• KC remains constant

• KC decreases

• KC increases

In an endothermic reaction, what is the effect of increasing temperature on the equilibrium position?

• Shifts to both sides

• Shifts to the left

• Shifts to the right

• Remains unchanged

In the reaction of hydrogen with carbon dioxide, what is the nature of the reaction?

• Exothermic

• Neither

• Endothermic

• Neutral

What happens to the value of KC for an endothermic reaction when the temperature decreases?

• KC decreases

• KC increases

• KC remains constant

• KC doubles

What is the effect of decreasing temperature on the equilibrium position for an exothermic reaction?

• Remains unchanged

• Shifts to the left

• Shifts to the right

• Shifts to both sides