Integrated Rate Laws

Match the following

• horizontal line on a rate vs time graph

• First order reaction

• change in [A] over change in t

• Integrated Rate Law

• k=1/s

• Zero order reaction

• data does not include rate

• instantaneous rate

• independent variable is 1/[A]

• Second order reaction

Tags

NGSS.HS-PS1-5

Organize these options into the appropriate categories

Groups:

(a) First Order

,

(b) Second Order

,

(c) Zero Order

• k=1/s

• rate=k[A]

• dependent variable: ln[A] for integrated rate law

• rate=k

• rate=k[A][B]

• k=1/Ms

• dependent variable: [A} for integrated rate law

• k=M/s

• dependent variable: 1/[A] for integrated rate law

Tags

NGSS.HS-PS1-5

The following data were measured for the reaction BF₃(g) + NH₃(g) —> F₃BNH₃(g)

What is the rate law for the reaction?

• R=k[NH₃]

• R=k[BF₃]²[NH₃]

• R=k[BF₃][NH₃]

• R=k[BF₃][NH₃]²

Tags

NGSS.HS-PS1-5

Which of the following is the correct integrated rate law for a first-order reaction?

Tags

NGSS.HS-PS1-5

For a second-order reaction, what is the integrated rate law?

Tags

NGSS.HS-PS1-5

In a zero-order reaction, how does the concentration of reactant change over time according to the integrated rate law?

• Linearly decreases

• Exponentially decreases

• Remains constant

• Linearly increases

Which graph represents a first-order reaction according to its integrated rate law?

Tags

NGSS.HS-PS1-5

What is the unit of the rate constant for a second-order reaction?

Tags

NGSS.HS-PS1-5

For a zero-order reaction, what is the relationship between the rate of reaction and the concentration of reactant?

• Rate is independent of concentration

• Rate is directly proportional to concentration

• Rate is inversely proportional to concentration

• Rate is proportional to the square of concentration

Tags

NGSS.HS-PS1-5

Which of the following statements is true for a first-order reaction?

• Half-life is constant regardless of initial concentration

• Half-life increases with increasing initial concentration

• Half-life decreases with increasing initial concentration

• Half-life is zero

Tags

NGSS.HS-PS1-5