Chapter 17.3

Question 0

Give an example of a one step compound

Answer 0

Hcl+NaOH-> NaCl and H2O

Happens immediately in a single step

Question 1

Describe the rxn mechanism

Answer 1

Series f steps that must progress in order so that a rxn can proceed “pathway”
Determine by experiment only
May involve “intermediate species” which are temporarily formed compounds or ions

Question 2

3 step pathway

Answer 2

H2 + I2 -> 2HI
1. I2 ~> (2I-)
2. I- + H2~> (H2I)
3. (I-) + H2 I ~> 2HI
() are intermediate species

Question 3

In a 3 step pathway what determines the rxn rate

Answer 3

The step that takes the longest called the RDS - Rate determining step

Question 4

Describe the collision theory

Answer 4

For a rxn to go..

1. Collide
2. Be properly oriented
3. Have enough NRG for valence es to merge

Question 5

Describe energy activation

Answer 5

Minimum initial NRG input required to transform reactants to intermediate species

Question 6

Intermediate species

Answer 6

The activation complex

Transitional structure that results from an effective species