Kinetics

Question 1

What is the symbol for the rate constant?

Answer 1

k

Question 2

How can the rate constant be determined?

Answer 2

by experiment only

Question 3

How can the rate equation be expressed?

Answer 3

rate=k[A][B]

Question 4

What is the value of Kc if the products>reactants?

Answer 4

kc is greater than or equal to 1

Question 5

What is the value of Kc if products

Answer 5

kc is less than or equal to 1

Question 6

What can be said about the value of kc?

Answer 6

the greater the value of kc, the further the reaction has gone to completion

Question 7

What does kc give no indication of?

Answer 7

the rate of reaction

Question 8

Does kc have units?

Answer 8

no

Question 9

What is the relationship between pressure and the number of moles?

Answer 9

pressure is directly proportional to the number of moles

Question 10

What do homogeneous reactions involve?

Answer 10

all reactants and products must be in the same phase

Question 11

What do heterogeneous reactions involve?

Answer 11

where there is more than one phase in the reaction

Question 12

What value are pure solids and pure liquids given?

Answer 12

1

Question 13

Is the position of the equilibrium changed if the concentration is changed?

Answer 13

yes

Question 14

What factors affect the composition of an equilibrium mixture?

Answer 14

only temperature

Question 15

What happens to the Kc in an exothermic reaction?

Answer 15

kc decreases with increased temperature

Question 16

What happens to the value of Kc in an endothermic reaction?

Answer 16

equilibrium constant increases with increased temperature