Chp.13 and 14

Question 1

Kinetics

Answer 1

the study of reaction rates

Question 2

Factors that affect rates of reaction

Answer 2

1.Concentration of reactants - most reactions proceed faster if reactant is increasesd.
2. Temperature - rates increase as temp increases (always)
3. Catalyst - many reactions proceed faster with catalyst
4. Surface Area - Especially with solids, reactions tend to go faster with more surface area (nature of reactants)

Question 3

Increase in _______ or decrease in ______ shifts system to the right (Concentration)

Answer 3

reactants; products

Question 4

Using smaller pieces of coal

Answer 4

increases rate of reaction

Question 5

Increasing concentration of oxygen

Answer 5

increases rate

Question 6

Lowering temp

Answer 6

decreases ROR

Question 7

Decreasing amount of coal

Answer 7

decreases ROR

Question 8

Reaction orders get larger as temp icncreases

Answer 8

false

Question 9

Reaction orders get larger as temp icncreases

Answer 9

true

Question 10

An order equal to zero means there is no concentration dependence with rate

Answer 10

true

Question 11

Reaction orders values must be experimentally determined

Answer 11

true

Question 12

Values decreases with decreasing temp (rate constant

Answer 12

false

Question 13

Unit are independent on overall order of reaction (rate constant)

Answer 13

false

Question 14

Larger its value, slower the reaction (rate constant)

Answer 14

false

Question 15

Arrhenious equation finds Ae (collision and transition theory)

Answer 15

true

Question 16

Larger negative value of delta G causes faster reaction (temp and reaction rate)

Answer 16

false

Question 17

Reaction rate always increases at higher temp (temp and reaction rate)

Answer 17

true

Question 18

Larger value of Ae increases reaction rate (temp and reaction rate)

Answer 18

false

Question 19

Catalyst

Answer 19

substance that increases the rate of reactio by lowering Ea

Question 20

Homogeneous catalyst

Answer 20

In the same phase as the reactants, ex. 2 liquid catalyst with liquid reactants

Question 21

Heterogeneous catalyst

Answer 21

A catalyst that is in a different phase from that of the reactant substances. Ex. catalyst combined with reactants in liquid or gas phase

Question 22

Biological catalysts

Answer 22

(enzymes) made from amino acids. CLassified as proteins. Aid in converting proteins to amino acids, carbohydrase into carbohydrate into sugar, etc

Question 23

LeChatelier’s Principle

Answer 23

When a disturbance is applied to a system at equilibrium, the equilibrium shifts to relieve the disturbance

Question 24

Homogenous equilibrium

Answer 24

all the reactants and products are in the same physical state