Reaction Rate Laws

How could we make this reaction happen more quickly?

• Decrease the concentration of the acid

• Crush the chalk to increase the surface area

• Put the test tube in an ice bath

Tags

NGSS.HS-PS1-5

What is the energy of the activated complex?

• 75 kJ

• 225 kJ

• 300 kJ

• 225 kJ

Tags

NGSS.HS-PS1-4

When we investigate the rate of reaction we are looking at the...

• amount of product formed

• speed of reaction

• concentration of reacting particles

• combining reactants with products

Tags

NGSS.HS-PS1-5

Which of the following factors does NOT affect the rate of a chemical reaction?

• Temperature

• Concentration of reactants

• Presence of a catalyst

• Color of reactants

Tags

NGSS.HS-PS1-5

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-5

• 0.25 mol/L/s

• 0.5 mol/L/s

• 1.0 mol/L/s

• 2.0 mol/L/s

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

Which of the following statements is true about catalysts?

• They increase the activation energy of a reaction.

• They are consumed in the reaction.

• They provide an alternative pathway with a lower activation energy.

• They change the equilibrium position of a reaction.

Tags

NGSS.HS-PS1-4

If the rate of a reaction doubles when the concentration of a reactant is doubled, what is the order of the reaction with respect to that reactant?

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-5

• 0

• 1

• 2

• 3

Tags

NGSS.HS-PS1-5

In a first-order reaction, how does the half-life change as the concentration of the reactant decreases?

• It increases.

• It decreases.

• It remains constant.

• It becomes zero.