Ch 7 Reaction Rates and Chemical Equilibrium

Question 1

K&raquo_space; 1

Answer 1

Products favored
(Right side)

Question 2

K &laquo_space;1

Answer 2

Reactants favored
(Left side)

Question 3

K ~ 1

Answer 3

Similar amounts of reactants and products

Question 4

Chemical kinetics

Answer 4

Study of rates of chemical reactions

Question 5

Rate of reaction

Answer 5

Not constant over long period of time
At beginning, change in concentration is directly proportional to time
Reactant is used up, rate of reaction decreases

Question 6

For 2 molecules or ions to react they must first

Answer 6

COLLIDE

Question 7

Effective collision

Answer 7

Results in reaction between 2 molecules or ions
Form a new compound

Question 8

Activation energy

Answer 8

Minimum energy for reaction to occur

Question 9

Reactants must possess

To form products
Even though they have more energy

Answer 9

Activation energy (over the hill)

Question 10

3 reasons a reaction takes place

Answer 10

1. Energy is required
2. Molecules must be oriented properly when they collide
3. Frequency of collisions

Question 11

How to change rate of chemical reaction

Answer 11

1. Use ions (covalent slower)
2. Increase concentration
3. Use temperature (goes up by 10C reaction doubles)
4. Use catalysts (enzymes)
   Anything that doesn’t use itself up and still increases the rate

Question 12

Equilibrium constant

Answer 12

Products on top
Reactants on bottom