Molecules Gas Laws LiquidsPhase

ChangesAcids/ Bases

Acids/ Bases

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$1000 $1000 $1000 $1000 $1000 $1000

TitrationsThermochemistry

Rates Equilibrium Redox Potpouri

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Final Jeopardy

Freezing Point Depression

Final Jeopardy

25g/58.5g/mol = .43 mol

.43 mol/.250Kg = 1.7 m

∆T = 1.86oC/m x 1.7m x (2) = -6.3oC

What is the freezing point of a solution made by dissolving 25

grams of NaCl in 250 mL of water?

$200

Kinetic Molecular Theory

This theory discusses the movement of molecules in

their various states

$400

Boyles Law

The pressure and volume of a gas are inversely related

$600

The atmosphere

What is the SI unit for pressure?

$800

The pressure will also increase

Gay-Lussac would say as the temperature of a gas increases

at constant volume

$1000

Combined Gas Law

PV = PV

T T

$200

Evaporation

Process by which liquids change into a gas

$400

Sublimation

Phase change from a solid directly to a liquid

$600

Gas

In which state do the molecules have the greatest

kinetic energy?

$800

Temperature remains constant

What happens to temperature during a phase change

$1000

Triple Point

Point at which all three states of matter can co-exist

$200

Sand

Sand, alloys, soda, which is not homogeneous?

$400

Electrolyte

A solution capable of conducting electricity

$600

Compounds that are similar chemically dissolve other compounds that are alike

What does “likes dissolve likes” refer to?

$800

2 Molar

4 moles of a solute is dissolved in 2 Liters of

solution, what is the Molarity

$1000

PbCl2 Pb2+(aq) + 2 Cl-(aq)

Write the equation for the dissolution of PbCl2(s) in

water

$200

supersaturated

A solution in which no more solute can be dissolved

$400

FP depression and BP elevation

Name two colligative properties

$600

Change in temp., molal constant, molality

Using the equation ΔT = kf x m Explain the symbols

$800

1 molal NaCl b/c it is an electrolyte and gives you two particles per mole

Which would boil at a higher temperature and why?

1 molal glucose or 1 molal NaCl

$1000

5 M, (.5 moles/.100L)

Math Question: What is the molarity of 20 grams of

NaOH dissolved in 100 mL of water

$200

Base

pH greater than 7

$400

Acid

[H+ ] > [OH-]

$600

pH = - log [H+]

What does pH equal

$800

Sulfuric Acid

What is the name of H2SO4

$1000

1 x 10-7

Math Question: If pH = 7, then what is the [OH-]

$200

Arrhenius Definition

Bases produce OH- in water solutions

$400

Whose definiton states that Acids are proton donors

$600

8.7

What is pOH if pH = 5.3

$800

pH = 10

[H+] = 1 x 10-10

What is the pH?

$1000

pH = 9

[H+] = 1 x 10-9 so pH = 9

If [OH-] = 1 x 10-5

What is the pH?

$400

Temperature

Average kinetic energy of the molecules =

$800

Specific Heat

Amount of heat required to raise 1 gram of a substance

1oC

$1200

Is equal to heat lost by the material

In calorimetry experiments the heat gained by water

$1600

J = 25g x 8 oC x 4.18 J/goC

How much heat is required to raise 25 grams of water from

22oC to 30oC?

Specific Heat of water = 4.18 J/goC

$2000

Products should be higher than reactants

Come to the board and draw a reaction that is endothermic

$400

Low energy and high entropy

In nature reactions tend to go towards what 2 directions?

$800

Randomness or disorder

What does entropy mean?

$1200

Reaction mechanism

A multistep process for a chemical reaction is called

$1600

Activation energy

The energy hump a reaction needs to overcome is called

$2000

Temperature, surface area, catalyst, nature of reactants

Name three (3) factors that affect reaction rate.

$400

Rate of the Forward reaction equals the rate of the reverse reaction

Define chemical equilibrium

$800

Ka = [CH3COO-] [H3O+]

[CH3COOH]

Write the equilibrium expression for the following;

CH3COOH(aq) + H2O(l) CH3COO-(aq) + H3O(aq)

$1200

A large Ka value

A strong acid will have what kind of value for it’s Ka ?

$1600

Left

N2(g) + 3 H2(g) 2 NH3(g) + 92 kJ

If heat is added the reaction will shift?

$2000

Left, more gas

N2(g) + 3 H2(g) 2 NH3(g) + 92 kJ

If the volume is increased the reaction will shift

$400

Ionization Energy

$800

Molecules need to come in contact in order to react

What is the collision Theory?

$1200

Activated complex

The temporary structure at the top of the energy diagram

(yellow/green)

$1600

PbCl2 has a larger Ksp

Which salt would be the most soluble?

PbCl2 Ksp = 1.7 x 10-5

Ag2S Ksp = 6.0 x 10-51

$2000

Ionic

$400

Loss of electrons= oxidation

Gain of electrons = reduction

What does LEO goes GER mean?

$800

Reduction

Fe+3 + 3e- Fe

Is this an oxidation or a reduction?

$1200

+ 7

What is the oxidation number of Mn in MnO4

- ?

$1600

O, it goes from 0 to -2

What is getting reduced in the equation below?

4 Cu + O2 2 Cu2O

$2000

1.06 Volts

Given the information on the board, calculate the cell

potential for the following cell;

Ag+/Ag // Ni/Ni+2

$400

At the cathode

In a voltaic cell where does reduction occur?

$800

1 x 10-14

What is the ionization constant for water?

$1200

O2 since it is getting reduced

Who is the oxidizing agent in the reaction below?

Fe + O2 Fe2O3

$1600

Endpoint

In a titration this is the point when you see a color change

$2000

.030 Molar

Suppose that 10.1 mL of HNO3 is neutralized by 71.4 mL of a .0042 M

solution of KOH in a titration. Calculate the molarity of the HNO3.

Daily Double

[OH-] > [H+]

In a basic solution what is the relationship between [H+] and

[OH-]

Daily Double

If a stress is applied to a system at equilibrium the system will adjust to relieve the stress and establish a new equilibrium

State Le Chatelier’s Principle and give an example

Daily Double

Ksp = 4.3 x 10-11

For the equilibrium CaF2(s) Ca2+(aq) + 2 F-(aq). Write the equilibrium expression and then calculate the Ksp

value given the following information:[Ca2+] = 2.2 x 10-4 M and [F-] = 4.4 x 10-4 M

The Jeopardy champion!