AP CHEM Unit 5 Days 1-3 REVIEW

In general, which does NOT increase the speed of a combustion reaction?

• high activation energy

• adding a catalyst

• increasing the amount of fuel present

• increasing the temperature of the reaction

• increasing surface area

Tags

NGSS.HS-PS1-5

The rate of formation of NO₂(g) in the reaction
2 N₂O₅(g) → 4 NO₂(g) + O₂(g)
is 5.78 (mol NO₂)/L/s. What is the rate at which N₂O₅ decomposes? 
NO CALCULATOR

• 5.78
  (mol N₂O₅)/L/s
• 2.89
  (mol N₂O₅)/L/s
• 0.723
  (mol N₂O₅)/L/s
• 11.6
  (mol N₂O₅)/L/s

Tags

NGSS.HS-PS1-7

Which of the following is one way to correctly describe the rate of the reaction shown?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-5

For the reaction
2A + B → products
use the experimental data provided to determine the rate law.
NO CALCULATOR

• rate = k [A] [B] 
• rate = k [A] [B]⁰ 
• rate = k [A]
• rate = k [A]²

Tags

NGSS.HS-PS1-5

Calculate the value of the specific rate constant WITH CORRECT UNITS using the data provided.
YES CALCULATOR

• 0.491M^-1min^-1
• 0.327M^-1min^-1
• 0.327M^-2min^-1
• 0.491M^-2min^-1

Tags

NGSS.HS-PS1-5

Which of the following values correspond to the values of the reaction orders x and y for NO and H₂?

• x=2, y=1
• x=1, y=1
• x=2, y=2
• x=1, y=2

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

What is the overall order of reaction based on the experimental data provided?

• first order
• second order
• third order
• zero order

Tags

NGSS.HS-PS1-5

Consider the equation for the decomposition of N₂O₅(g) and the experimentally determined rate law below.
2N₂O₅(g) ⇌ 4NO₂(g) + O₂(g)
rate=k[N₂O₅]
What are the units for the rate constant, k, with the time measured in minutes?

• M^-1min^-1
• min^-1
• M^-2min^-1
• M^-3min^-1

Tags

NGSS.HS-PS1-5

For the reaction shown below a series of trials were performed and the corresponding rate information was collected.
BrO₃^-  +  5Br^-  +  6H⁺  → 3 Br₂  +  3H₂O
What is the overall order of reaction?
NO CALCULATOR!

• 1st order overall
• 2nd order overall
• 3rd order overall
• 4th order overall

Tags

NGSS.HS-PS1-5

For the reaction shown below a series of trials were performed and the corresponding rate information was collected.
BrO₃^-  +  5Br^-  +  6H⁺  → 3 Br₂  +  3H₂O
For experiment 4, calculate the concentration of BrO₃^- remaining after 75% of the H⁺ has been consumed.
YES CALCULATOR!

• 0.02M [BrO₃^-]
  remaining
• 0.025M [BrO₃^-] 
  remaining
• 0.075M [BrO₃^-] 
  remaining
• 0.15M [BrO₃^-] 
  remaining

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7