G8 Reaction Rates and Equilibrium PT1

An increase in temperature will cause:

• Increased reaction rate

• No change

• Decreased reaction rate

An increase in volume of gases will cause:

• Increased reaction rate

• No change

• Decreased reaction rate

An increase in pressure of gases will cause:

• Increased reaction rate

• No change

• Decreased reaction rate

An increase in concentration of a solution will cause:

• Increased reaction rate

• No change

• Decreased reaction rate

An increase in surface area of reactants will cause:

• Increased reaction rate

• No change

• Decreased reaction rate

HCl is reacted with Zn to form ZnCl₂ and H₂ gas. The concentration of HCl is increased from 0.5 mol/L to 2 mol/L. What happens to the rate of reaction?

• It will increase

• It will stay the same

• It will decrease

A reaction mixture of NaOH and formaldehyde is cooled from 80^oC to 0^oC. What happens to the rate of reaction?

• It will increase

• It will stay the same

• It will decrease

H₂ gas and O₂ gas are reacting together to form water in a sealed container. The volume of the container is expanded from 2L to 10L. What will happen to the rate of reaction?

• It will increase

• It will stay the same

• It will decrease

Magnesium can combust in air to form magnesium oxide. If we use a fine powder of Mg instead of a solid block, what will happen to the rate of reaction?

• It will increase

• It will stay the same

• It will decrease

The Haber process reacts together H₂ and N₂ gases to form NH₃. What will happen to the rate of reaction if we increase the pressure of these gases?

• It will increase

• It will stay the same

• It will decrease