Unit 8

Question 1

Collision Model

Answer 1

molecules must collide with enough energy and the correct orientation in order to react

Question 2

To increase reaction rate you… (4)

Answer 2

increase concentration
Increase temperature
Increase surface area
add a catalyst

Question 3

Catalyst

Answer 3

a substance that speeds up a reaction by LOWERING ACTIVATION ENERGY

Question 4

Activation energy

Answer 4

minimum energy requried for a reaction

Question 5

Endothermic diagram

Answer 5

energy with the reactants starts out low, and is absorbed in to raise products.
(energy absorbed is everything below prod.)

Question 6

Exothermic diagram

Answer 6

energy with the reactants starts high, and is released out to lower the products.
(energy released is everything below react.)

Question 7

Reversible Reactions…

Answer 7

always move towards equilibrium

Question 8

In Eq, if a product is removed the system will shift..

Answer 8

right

Question 9

In Eq, if a product is added the system will shift…

Answer 9

left

Question 10

in Eq, if a reactant is added the system will shift

Answer 10

right

Question 11

in Eq if a reactant is removed the system will shift

Answer 11

left

Question 12

In Eq if heat is in the products

Answer 12

the system is endo

Question 13

In Eq if heat is in the reactants

Answer 13

the system is exo

Question 14

In Eq if pressure is increased

Answer 14

the system will move right

Question 15

Equilibrium graphs

Answer 15

Reactants on top
Products at 0
Slope= rate
Equilibriam is when slopes flatten

Question 16

Equilibrium expression

Answer 16

K = products / reactants

Question 17

With K, remember

Answer 17

to raise each molarity to the power of its coefficient

Question 18

K > 1 means at equilibrium

Answer 18

the positin is to the right, and consists of products

Question 19

K<1 means at equilibrium

Answer 19

the position is to the left and consists of reactants

Question 20

In equilibrium expressions never include

Answer 20

solids or liquids