Reaction Mechanisms

What is the catalyst in the following rate mechanism?

• HBr
• H₂O
• There is no catalyst

Tags

NGSS.HS-PS1-5

How many intermediates are in the following rate mechanism?

• 0
• 1
• 2
• 3

How many elementary steps are in the following reaction

• 1
• 2
• 3

Which is the rate determining step?

• 1
• 2
• 3

Tags

NGSS.HS-PS1-5

Which of the elementary steps  has the highest activation energy?

• slow
• fast

Which step does a catalyst affect?

• slow 
• fast

Tags

NGSS.HS-PS1-5

If there is only single substance (atom, molecule, or ion) involved in the rate-determining step, that reaction is said to be

• unimolecular

• bimolecular

• polimolecular

• termolecular

If there is two substances (atom, molecule, or ion) involved in the rate-determining step, that reaction is said to be

• unimolecular

• bimolecular

• termolecular

• polimolecular

Tags

NGSS.HS-PS1-5

A possible mechanism for reaction :

A + 2B → C + D

is shown below :

2B → E (slow)

A + E → C + D (fast)

which of the following diagram represents reaction pathway diagram for this reaction mechanism?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-4