Chapter 15

Question 0

Collision theory

Answer 0

Chemical reactions occur through collisions between molecules and atoms.

Question 1

Living things are in _______ ___-________ within their surroundings

Answer 1

Controlled

Dis-equilibrium

Question 2

___-energy collisions lead to products and ____ energy collisions do not

Answer 2

High

Low

Question 3

Activation energy

Answer 3

An energy barrier that must be overcome by reactants to achieve products

Question 4

Dynamic equilibrium

Answer 4

In a chemical reaction, the condition in which the rate of forward reaction equals the rate of the reverse reaction.

Question 5

Reactants and products that are experiencing dynamic equilibrium are _______

Answer 5

Not equal

Question 6

Keq

Answer 6

Equallibrium constant

aA+bB (double arrow) cC+ dD
Keq= ((C)^c(D)^d)/((A)^a(B)^b)

Products raised to the power = to coefficients divided by reactants raised to the power of coefficiants

Question 7

Keq«1 means

Answer 7

Reverse reaction is favored, so more reactants then products

Question 8

Keq=1

Approximately

Answer 8

Similar amounts of products and reactants will form

Question 9

Keq»1 means

Answer 9

Forward reaction is favored

More products then reactants

Question 10

In the Keq equation, solids are _____

Answer 10

Constants, so remove them from the formula

Question 11

In the Keq equation liquids are

Answer 11

Constant (if pure)

Question 12

In Keq equation, only include ____ and ______ substances

Answer 12

Aqueous

Gaseous

Question 13

Le Chateliers principle

Answer 13

When a chemical system at equilibrium is disturbed, the system shifts in a direction that minimizes the disturbance.

Question 14

In an ectothermic reaction we think of heat as a _____ while in an endothermic reaction we think of heat as a _____

Answer 14

Product

Reactant

Question 15

Ksp

Answer 15

The reactants times each other different from Keq

Question 16

A small ksp means _____ reaction is favored while a large value means the _______ reaction is favorable

Answer 16

Reverse

Forward

Question 17

Molar soluability

Answer 17

Moles per liter

Moles/liter

Question 18

Ksp (is/is not) the molar soluability

Answer 18

Is not

Question 19

S=____

Answer 19

Square root of ksp

Question 20

Hydrogen and oxygen don’t react quickly despite a high Keq because their _________ _____ is ____

Answer 20

Activation
Energy
High

Question 21

Energy of compounds must initially be raised to overcome the activation energy so they can ___

Answer 21

Bond

Question 22

Catalysts minimize the _____ needed to over come the initial hump

Answer 22

Amount

Question 23

The ____ the activation energy the lower the amount of reactant molecules that will become products in a given amount of time

Answer 23

Higher

Question 24

At a given temperature, the ____ the activation energy for a chemical reaction, the slower the reaction rate.

Answer 24

Higher

Question 25

To speed a slow reaction you can increase the _______ or increase the temperature.

Finally you could utilize a ______ to speed the reaction.

Answer 25

Molarity/concentration

Catalyst

Question 26

Catalysts let us carryout reactions that would be otherwise impossible

Answer 26

Absorb bro

Question 27

Enzymes are _______ catalysts

Answer 27

Biological