Unit 1: Chemical Equilibrium

Question 1

In a system at EQ, what do rates become?

Answer 1

Rates become equal

Question 2

In a system at EQ, what do concentrations become?

Answer 2

Concentrations become constant

Question 3

What does K tell us?

Answer 3

The extent of a reaction

Question 4

K<10e-3

Answer 4

Mainly reactants

Question 5

10e-3<K<10e3

Answer 5

Equal amount of products and reactants

Question 6

K>10e3

Answer 6

Mainly products

Question 7

True or False:
- In a closed system volume is constant

Answer 7

True

Question 8

What is r? ( Ideal gas constant)

Answer 8

0.0821 L atm/mol K

Question 9

What is the equation to convert Kp and Kc?

Answer 9

Kp = Kc (RT)Δn

Question 10

Q<K

Answer 10

Reaction will proceed to the right (forward)

Question 11

Q=K

Answer 11

System is at EQ

Question 12

Q>K

Answer 12

Reaction will proceed to the left (reverse)

Question 13

If a reactant is added in equation

Answer 13

Direction will shift towards products

Question 14

If product is added in equation

Answer 14

Direction will shift towards reactant

Question 15

If there is a decrease in volume/ increase in pressure

Answer 15

Direction will shift towards side with fewer moles

Question 16

If there is an increase in volume/ decrease in pressure

Answer 16

Direction will shift towards the side with more moles of gas

Question 17

If there is a temp increase

Answer 17

Direction will shift towards the endothermic side

Question 18

If there is a decrease in temp

Answer 18

Direction will shift towards the exothermic side