Week 32 Chemistry

Assessment 9, Gas LawsWeek 32 ChemistryWarm Up: 4 MinutesYou should be working SILENTLYSit in your assigned seatThe reaction between carbonic acid and water is shown below:

H2CO3 + H2O D H3O+ + HCO3-

Which compound is acting as the Bronsted-Lowry Base in the forward reaction?Which compound is acting as the Arrhenius Acid in the forward reaction?

Write the Learning TargetAnnouncement/RemindersAcid/Base Exam is TOMORROWExam is 24 questions longReminder!!!Exam TomorrowAgendaWarm Up- 7 MinutesPurpose of Review/ Material Covered- 3 MinutesExpectations for White Board Jeopardy- 3 MinutesWhite Board Jeopardy- 37 MinutesClosing- 3 MinutesPurpose of ReviewingPrepare for Assessment 9Why Prepare?21Questions85%Material Covered on Assessment 9Properties of Acids and BasesArrhenius and Bronsted-Lowry DefinitionsClassifying ReactionspH scalepH Calculations (pH, pOH, [H+], [OH-])Strengths of Acids and Bases (Ka, Kb)White Board JeopardyStudents will work in groups of 3 to 4 (Team number is on the desk in front of you).

Students will need Dry Erase Board, Marker, Periodic Table, Eraser, and Calculator.

NOTES are allowed during White Board Jeopardy

White Board JeopardyHow to Play???Write your team number in the upper right hand cornerDuring the song, you will work the problem shown in your lap INDIVIDUALLY. At the end of the Jeopardy song, you will talk with your group.When Mr. Ghosh says Boards Up , all students in group must have Identical responses on their Dry Erase Boards that are correct in order to receive FULL CREDIT. Boards that are not up will not be counted. You may be called on randomly to explain your answer. If I do this and you cannot explain correctly, your team will NOT receive credit.

Team #Scoring and Rules/ExpectationsScoring:All questions are worth 1 point

Rules/Expectations:No talking during the Jeopardy songMust be working individually during the songNo arguing with Mr. Ghosh about scoringMust be explaining WHY during group work time

Any violations of the rules/expectations will result in your team losing a point

Prizes!The team that finishes with the most number of points will receive 5% extra credit on the Exam tomorrow.

Which of the following is a property of a base?

Bases are bitter in tasteBases have a strong colorBases are unreactiveBases turn litmus paper red

The equation below represents an equilibrium reaction:CH3NH2 + H2O D CH3NH3+ + OH-According to the Brnsted- Lowry theory of acids and bases, which of the following is acting as the base for the forward reaction? CH3NH2H2OCH3NH3+OH-

Which of the following is a precipitation reaction?

4 Al (s) + 3 O2 (g) 2 Al2O3 (s)Ca(NO3)2 (aq) + Na2SO4 (aq) CaSO4 (aq) + 2 NaNO3 (aq)HClO4 (aq) + KOH (aq) KClO4 (aq) + H2O (l)KBr (aq) + AgNO3 (aq) KNO3 (aq) + AgBr (s)

What does the pOH for a solution measure?

The relative hydrogen ion concentrationThe relative hydroxide ion concentrationThe molarityThe solubility

A solution of Rubidium Hydroxide (RbOH) was designed to have a molarity of 0.65 mol/L. However, there was a mistake in measurement and there are actually 2.45 moles of OH- dissolved in 8.87L of solution. Calculate the pH for the solution.

Why is NaOH considered an Arrhenius base?

It has a pH less than 7It releases OH- ions in solutionIt is able to accept protonsIt reacts with hydrogen ions

A chemical reaction is shown below:Ca + 2H+ Ca2+ + H2 Why is this chemical reaction classified as an oxidation-reduction reaction?

A chemistry student added two clear liquids together. The products of the reaction were water and an aqueous salt. What kind of reaction occurred?

Solution A has a pH of 4, and Solution B has a pH of 9. Which solution has a higher concentration of hydrogen ions?

Solution ASolution BThey have the same concentration of hydrogen ionsThe concentration of hydrogen ions cannot be determined

Calculate the pH for a solution with a hydrogen ion concentration of 1.98 x 10-9 M.

Two different basic solutions are compared. Both Solution #1 and Solution #2 ionize slightly in water. Which of the following is true of the two solutions?

Solution #1 and Solution #2 are strong basesSolution #1 is a strong base, Solution #2 is a weak baseSolution #1 is a weak base, Solution #2 is a strong baseSolution #1 and Solution #2 are weak bases

The Kb values for four different bases are shown below:

2.7 x 10-75.4 x 10-36.9 x 10-53.1 x 10-8Order the bases from strongest to weakest

ClosingGood Luck

StudyingWarm Up: 4 MinutesYou should be working SILENTLYStay in your own seatWrite three things that you could do once you get your test to ensure that youre successful.

When youre done, look through your notes and worksheets to prepare for the assessment.

Write the Learning TargetAgendaWarm Up: 5 MinutesGoals/ Expectations for Assessment: 3 Minutes Assessment: 42 MinutesClosing: 3 Minutes Why Prepare?21Questions85%What is Mastery?Expectations for AssessmentClear your desk of everything except a....

Number 2 PencilScantronCalculatorBackpacks and binders on the floorTesting TipsRead the problem and answer choices CAREFULLYIf you dont know the answer, make sure you at least take a guessGuessing on questions you dont know can only help you!Bubble your answers completely (scantron and test booklet)

Periodic Table is in the test packetTesting RulesStudents will remain SILENT for the duration of the test. Even if you are done, YOU CANNOT TALK or MAKE OTHER NOISESKeep your eyes on YOUR OWN PAPERRaise your hand if you have a question

Failure to follow the testing rules will result in your test being taken. You will then receive a ZERO and a dean referral.

Good Luck!

ClosingHow was your assessment?

What could you have done differently?

Warm Up: 4 MinutesYou should be working SILENTLYStay in your own seatSuppose that you have two balloons. Balloon #1 contains air under high pressure, while Balloon #2 contains air under low pressure. Which balloon would you expect to take up more space?

Write the Learning TargetAgendaWarm Up: 7 MinutesBoyles Law Video: 15 MinutesGuided Practice: 13 MinutesIndependent Practice: 15 MinutesClosing: 3 Minutes Lets look at Boyles LawWhat did you see?Warmup-Round 2Suppose that you have two balloons. Balloon #1 contains air under high pressure, while Balloon #2 contains air under low pressure. Which balloon would you expect to take up more space?

Boyles Law VideoGo to shschem.weebly.com (our class website)Bookmark this if you havent done so already!!!Hover over my page:Mr. Ghosh Video LessonsWatch video for April 23Take notes on your handoutWhat is a Law?A law is a statement that describes actions or a set of actions that occurs consistently.

What is Volume?Space occupied by any sample of matter.

PressureWhat is pressure?A Force Exerted by a Gas over a Given AreaWhat causes pressure?Collisions of the Gas Particles with the Walls of the Container

Gas ParticleWalls of theContainerThats Pressure!Units for Pressureatmospheres = atmmillimeters of mercury = mmHgkilopascals = kPapounds per square inch = psitorricelli = torr

1 atm = 760mmHg = 101.3kPa = 14.7psi= 760 torr

StandardPressuresState Boyles Law.

Graph for Boyles Law

Equation for Boyles LawInverse or Direct?Boyles LawState Boyles Law.For a given mass and at a constant temperature, the volume of a gas varies inversely with pressure.

Graph for Boyles Law

Equation for Boyles LawInverse or Direct?Boyles LawState Boyles Law.For a given mass and at a constant temperature, the volume of a gas varies inversely with pressure.

Graph for Boyles Law P

VEquation for Boyles LawInverse or Direct?Boyles LawState Boyles Law.For a given mass and at a constant temperature, the volume of a gas varies inversely with pressure.

Graph for Boyles Law P

VEquation for Boyles LawInverse

Inverse or Direct?Boyles LawState Boyles Law.For a given mass and at a constant temperature, the volume of a gas varies inversely with pressure.

Graph for Boyles Law P

VP1 x V1 = P2 x V2

Equation for Boyles LawInverse

Inverse or Direct?Boyles LawExample #11000 mL of a gas at a pressure of 101.3 kPa is compressed to 473 mL. What is the new pressure of the gas? [Round to the tenths place]

Example #2In a thermonuclear device, the pressure of gases within the bomb casing reaches 4,000 atm. When the bomb casing is destroyed by the explosion, the gas is released into the atmosphere where it reaches a pressure of 5 atm and the gas has a volume of 800 mL. What is the volume of the gas before the explosion?

Guided PracticeTake 13 seconds to study the problem. When Mr. Ghosh indicates that you can talk, take 37 seconds to work the problem with your teammates. When Mr. Ghosh says SWAG, be ready to share and explain your answers.Guided Practice #1Which graph represents the relationship between volume and pressure?

Graph 1 Graph 2 Graph 3 Graph 4 Guided Practice #2The pressure on a 400-milliliter sample of CO2(g) at constant temperature is increased from 600 mmHg to 1800mmHg. What is the new volume?

Guided Practice #3To what region would point A shift if only the volume was increased?

AIndependent Practice Its time to see if you truly understand Boyles Law. ..ClosingIf the pressure of a system decreases, what happens to the volume of the system? What is the name of this relationship?

Warm Up: 4 MinutesYou should be working SILENTLYStay in your own seatSynthetic diamonds can be manufactured at a volume of 2.5 L. If we took 5.00 liters of gas at 90,000 atm and compressed it to a volume of 2.5 L what would the pressure of that gas be?

Write the Learning TargetAgendaWarm Up: 7 MinutesCharles Law Video: 15 MinutesGuided Practice: 13 MinutesIndependent Practice: 15 MinutesClosing: 3 Minutes WHAT IS THE RELATIONSHIP BETWEEN V & T?What did you see?Charles Law VideoGo to shschem.weebly.com (our class website)Bookmark this if you havent done so already!!!Hover over my page:Mr. Ghosh Video LessonsWatch video for April 24Take notes on your handoutUnits ReviewConceptUnitVolume Units ReviewConceptUnitVolume mL or LUnits ReviewConceptUnitVolume mL or LTemperatureUnits ReviewConceptUnitVolume mL or LTemperatureCNews FlashYou Cannot Use C When Referring to Temperature[For Gas Laws]You must use Kelvin, kConvert from Celsius to KelvinAdd 273 to the Celsius Temperature

Example:25C + 273 = 298 KCheck PointWhat is the Kelvin Temperature for 50 C ?

323 KCheck PointWhat is the Celsius Temperature for 298 K?

25 CState Charless Law.

Graph for Charless Law

Equation for Charless Law

Inverse or Direct?

Charless LawState Charless Law.For a given mass and at a constant pressure, the volume of a gas varies directly with the Kelvin temperature.

Graph for Charless Law

Equation for Charless LawInverse or Direct?Charless LawState Charless Law.For a given mass and at a constant pressure, the volume of a gas varies directly with the Kelvin temperature.

Graph for Charless Law V

TEquation for Charless LawInverse or Direct?Charless LawState Charless Law.For a given mass and at a constant pressure, the volume of a gas varies directly with the Kelvin temperature.

Graph for Charless Law V

TEquation for Charless LawDirect

Inverse or Direct?Charless LawState Charless Law.For a given mass and at a constant pressure, the volume of a gas varies directly with the Kelvin temperature.

Graph for Charless Law V

TEquation for Charless LawDirect

Inverse or Direct?Charless Law

Temperature must be in Kelvin.Example 1A man heats a balloon in the oven. If the balloon initially has a volume of 0.4 liters and a temperature of 20 C, what will the volume of the balloon be after he heats it to a temperature of 250 C?

Example 2A sample of gas is held at 50 oC at a volume of 40L. What will the Celsius temperature be if the volume is increased to 80L?

Guided Practice # 1How hot will a 2.3 L balloon have to get to expand to a volume of 400 L? Assume that the initial temperature of the balloon is 25 C. [Answer question in Kelvin]

Guided Practice 2On hot days, you may have noticed that potato chip bags seem to inflate, even though they have not been opened. If I have a 250 mL bag at a temperature of 292 K, and I leave it in my car which has a temperature of 333K, what will the new volume of the bag be?

Try It By YourselfIndependent PracticeClosingWhat is the relationship between Volume and Temperature?

What law explains the relationship between volume and temperature?

What law explains the relationship between Pressure and Volume?

What is the relationship between pressure and volume?

Warm Up: 4 MinutesYou should be working SILENTLYStay in your own seatA 350mL soda can is filled with carbon dioxide gas at 25C. If the can is heated to 80C, what will the new volume of the gas be?

Write the Learning TargetAgendaWarm Up: 7 MinutesG. Lussacs Law Video: 15 MinutesGuided Practice: 13 MinutesIndependent Practice: 15 MinutesClosing: 3 Minutes What is the relationship between P & T?What did you see?G. Lussacs Law VideoGo to shschem.weebly.com (our class website)Bookmark this if you havent done so already!!!Hover over my page:Mr. Ghosh Video LessonsWatch video for April 25Take notes on your handoutUnit ReviewFor each of the following units, identify as either:VolumePressureTemperatureUnit ReviewkPa

PressureUnit ReviewK

TemperatureUnit Reviewatm

PressureUnit ReviewmL

VolumeUnit ReviewC

TemperatureUnit ReviewmmHg

PressureState G-Ls Law.

Graph for G-Ls Law

Equation for G-Ls LawInverse or Direct?G. Lussacs LawState G-Ls Law.For a given mass and at a constant volume, the pressure of a gas varies directly with Kelvin temperature.

Graph for G-Ls Law

Equation for G-Ls LawInverse or Direct?G. Lussacs LawTemperature must be in Kelvin.State G-Ls Law.For a given mass and at a constant volume, the pressure of a gas varies directly with Kelvin temperature.

Graph for G-Ls Law P

TEquation for G-Ls LawInverse or Direct?G. Lussacs LawTemperature must be in Kelvin.State G-Ls Law.For a given mass and at a constant volume, the pressure of a gas varies directly with Kelvin temperature.

Graph for G-Ls Law P

TEquation for G-Ls LawDirect

Inverse or Direct?G. Lussacs LawTemperature must be in Kelvin.State G-Ls Law.For a given mass and at a constant volume, the pressure of a gas varies directly with Kelvin temperature.

Graph for G-Ls Law P

TEquation for G-Ls LawDirect

Inverse or Direct?G. Lussacs Law

Temperature must be in Kelvin.Example #1As gas has a pressure of 7.58 kPa at 439 K. What will the pressure be at 611K if the volume does not change?Example #2A gas has a pressure of 699.0 mmHg at 40.0 C. What is the temperature at 760 mmHg?

Guided Practice #1A container of gas is initially at 0.500 torr and 25 C. What will the pressure be at 125 C?

0.668 torrGuided Practice #2A rigid container is at a temperature of 112oC. When heated to 224oC, the pressure was 288 kPa. What was the initial pressure? Round your answer to the nearest tenth.

223.2 kPATry It By YourselfIndependent Practice

P1V1 = P2V2

ClosingWhat is the relationship between pressure and temperature?

Whose law is this?

What equation is used for this law?null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51null32052.51