16.1

The k value of a reaction is dependent on the concentration of the reactants.

• True

• False

Tags

NGSS.HS-PS1-5

What does a catalyst do?

• Increase the rate of all steps of a reaction.

• Lowers the activation energy of the slow step

• Cools the reaction down

• Increases the concentration of the reaction

Tags

NGSS.HS-PS1-5

In which experiment is the rate of reaction between hydrochloric acid and calcium carbonate slowest? 

• A
• B
• C
• D

Tags

NGSS.HS-PS1-5

Which trials would be used to measure the rate exponent for reactant 'A'?

• trials 1 and 2

• trials 1 and 3

• trials 2 and 3

Tags

NGSS.HS-PS1-5

Which trials would be used to find the rate exponent for B

• trials 1 and 2

• trials 1 and 3

• trials 2 and 3

Tags

NGSS.HS-PS1-5

What is the rate exponent for A?

• 0
• 1
• 2

Tags

NGSS.HS-PS1-5

What is the rate exponent for B?

• 0

• 1

• 2

Tags

NGSS.HS-PS1-5

Which trial do you insert into the rate law to find k (rate = k [A]^m[B]ⁿ)?

• trial 1
• trial 2
• trial 3
• any trial will work

Tags

NGSS.HS-PS1-5

What does a k value tell you?

• the specific rate constant of a reaction given certain concentrations

• The generalized rate constant of a reaction regardless of concentrations

Tags

NGSS.HS-PS1-5

What is the catalyst in the following rate mechanism?

• HBr
• H₂O
• There is no catalyst