Integrated Rate Law Chemistry

The average rate of disappearance of ozone in the reaction 2O₃(g) → 3O₂(g) is found to be 8.9 x 10^–3 atm over a certain interval of time.

What is the rate of appearance of O₂ during this interval?

• 1.3 x 10^–2 atm/time

• 8.9 x 10^–3 atm/time

• 5.9 x 10^–3 atm/time

• 2.7 x 10^–2 atm/time

• 1.8 x 10^–2 atm/time

Tags

NGSS.HS-PS1-5

The rate expression for a particular reaction is Rate = k[A][B]².

If the initial concentration of B is increased from 0.1 M to 0.3 M, the initial rate will increase by which of the following factors?

• 3

• 27

• 4

• 6

• 9

Tags

NGSS.HS-PS1-5

For the reaction: 2HI → 2H₂ + I₂

If HI is first order, which of the following will yield a linear plot?

• log [HI] vs time

• 1/[HI] vs time

• [HI]² vs time

• [HI] vs time

• ln[HI] vs time

Tags

NGSS.HS-PS1-5

For the reaction: 2HI → 2H₂ + I₂

If HI is first order, which of the following will yield a negative exponential plot?

• log [HI] vs time

• 1/[HI] vs time

• [HI]² vs time

• [HI] vs time

• ln[HI] vs time

For the reaction: 2HI → 2H₂ + I₂

If HI is second order, which of the following will yield a linear plot?

• log [HI] vs time

• 1/[HI] vs time

• [HI]² vs time

• [HI] vs time

• ln[HI] vs time

Tags

NGSS.HS-PS1-5

For the reaction: 2HI → 2H₂ + I₂

If HI is second order, will plotting 1/[HI] vs time give a positive or negative slope?

• positive

• negative

Tags

NGSS.HS-PS1-7

Which of the following statements is typically true for a catalyst?

• The concentration of the catalyst will go down as the reaction proceeds

• The catalyst provides a new pathway in the reaction mechanism

• The catalyst speeds up the reaction

• B and C

• All of the above

The catalyzed reaction has a _____ activation energy and thus causes a _____ reaction rate.

• higher, lower

• higher, higher

• higher, steady

• lower, higher

• lower, steady

Tags

NGSS.HS-PS1-5

Consider the following mechanism:

A₂ + B₂ → R + C (slow)

A₂ + R → C (fast)

Which is the intermediate?

• A₂

• A

• B

• R

• C

Consider the following mechanism:

A₂ + B₂ → R + C (slow)

A₂ + R → C (fast)

What is the overall simplified balanced equation?

• A₂ + B₂ → R + C

• A₂ + R → C

• 2A₂ + B₂ → 2C

• 2A₂ + B₂ → C

• 2A₂ + 2B₂ → 2C

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7