Starter Question 2. Zn + I2 → ZnI2

Slides:

Advertisements

Similar presentations

The Gas Laws You can predict how pressure, volume, temperature, and number of gas particles are related to each other based on the molecular model of a.

Advertisements

GASES. General Properties of Gases There is a lot of “free” space in a gas. Gases can be expanded infinitely. Gases fill containers uniformly and completely.

Section 2 – The Gas Laws Scientists have been studying physical properties of gases for hundreds of years. In 1662, Robert Boyle discovered that gas.

Physical Characteristics of Gases

1 Oxidation-Reduction Reactions Reactions resulting in the change of oxidation numbers Zn + 2AgNO 3  Zn(NO 3 ) 2 + 2Ag In this reaction Zn is oxidized.

Drill 4/16/2015 What do you think is the oldest form of human flight? How does it work?

February 5, 2008  Go over Charles’s Law and Avogadro’s Law Homework  Introduce Combined Gas Law  Introduce Ideal Gas Law  Work Sample Problems  HOMEWORK:

Volume (V)  The volume of a gas is simply the volume of the container it is contained in.  The metric unit of volume, liter (L), is often used. 

Agenda: 4/22 Gases & Gas Laws Purpose: To use mathematical formulas to predict how a gas will change Warm-up: Stoichiometry Problems with Gases States.

HONORS CHEMISTRY May 6, 2014.

1 Molecular Composition of Gases Chapter Gay-Lussac’s law of combining volumes of gases At constant temperature and pressure, the volumes of gaseous.

Chapter 11 Gases.

2 Amounts of Substance Learning Objectives: 2.1 A r & M r, Avogadro’s number, and the mole 2.2 Ideal Gas Law 2.3 Empirical and Molecular Formula 2.4 Moles.

Mullis1 Gay Lussac’s law of combining volumes of gases When gases combine, they combine in simple whole number ratios. These simple numbers are the coefficients.

Gases Chapter 14.

General Properties of Gases There is a lot of “free” space in a gas. Gases can be expanded infinitely. Gases fill containers uniformly and completely.

We NEED Air to Breathe!!! Gases form homogeneous mixtures with each other regardless of the identities or relative proportions of the component gases Air.

Gas Law Notes Chemistry Semester II Ideal Gas Law Combined Gas Law And Guy Lussac’s Law.

1 IB Topic 1: Quantitative Chemistry 1.4: Mass Relationships in Chemical Reactions  Solve problems involving the relationship between temperature,

GASES. Importance of Gases Airbags fill with N 2 gas in an accident. Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of.

Gases Part 1. Elements that exist as gases at 25 0 C and 1 atmosphere.

Gas Laws. Gas Pressure Pressure is defined as force per unit area Gas pressure is defined as collisions with the walls of a container Internal collisions.

Ch. 11 Molecular Composition of Gases

Preview Lesson Starter Objectives Measuring and Comparing the Volumes of Reacting GasesMeasuring and Comparing the Volumes of Reacting Gases Avogadro’s.

Chapter 11 Molecular Composition of Gases. Avogadro’s Law Equal Volumes of Gases at the Same Temperature & Pressure contain the Same Number of “Particles.”

Agenda: 4/23 or 4/24 Purpose: To use mathematical formulas to predict how a gas will change Warm-up: States of Matter Kinetic Molecular Theory Measurements.

Mole, gas volume and reactions, Chemical energy and Enthalpy,

Molecular Composition of Gases The Ideal Gas Law.

Unit IX: Gases Chapter 11… think we can cover gases in one day? Let’s find out, shall we…

Chapter 14-3 I. Avogadro’s Principle A. Equal volumes of gases at same T and P contain equal #’s of molecules B. H 2 + Cl 2 → 2HCl 1 vol. 1 vol. 2 vol.

Ideal vs. Real Gases No gas is ideal. As the temperature of a gas increases and the pressure on the gas decreases the gas acts more ideally.

IB1 Chemistry Quantitative 1b.. Topic 1: Quantitative chemistry 1.1 The mole concept and Avogadro’s constant Apply the mole concept to substances.

Ch. 5 Gases!!!!!. Pressure conversions O Pressure – force per unit area O Can be measured in atm, mmHg, torr, kPa, psi O 1atm =760mmHg = 760torr = 101.3kPa=

Molecular Composition of Gases

Avogadro’s law Equal volumes of different gases at the same temperature and pressure have the same number of moles. Example: Cl2 (g) + H2 (g)

Gas Laws 10-2 and Ideal Gas Law PV = nRT PV = nRT P = Pressure, in atm V = volume, in L n = number of moles T =Temperature, in Kelvins (K = C +

1. 2 Real Gases An ideal gas adheres to the Kinetic Theory exactly in all situations. Real gases deviate from ideal behavior at high pressures and low.

GASES. Importance of Gases Airbags fill with N 2 gas in an accident. Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of.

Week 33 Chemistry Gas Laws. Warm Up: 4 Minutes You should be working SILENTLY Stay in your own seat If the pressure of a tire is over 35 psi, it is likely.

Volume and Moles. Avogadro’s Law  When the number of moles of gas is doubled (at constant temperature and pressure, the volume doubles.  The volume.

Chapter 14 Review “The Behavior of Gases”. Chapter 14 Review Charles’s law states that ____. Charles’s law states that ____. As the temperature of a fixed.

1 GASES. 2 *Importance of Gases Airbags fill with N 2 gas in an accident. Gas is generated by the decomposition of sodium azide, NaN 3. 2 NaN 3 ---> 2.

Molar Relations. Stoichiometry The mathematics of chemical formulas and chemical equations. Chemists use a mole to “count” atoms.

Ideal Gas Law Van der Waals combined Boyle’s and Charles’ Laws.

Chapter 11 Gases Pages The Gas Laws Robert Boyle discovered that doubling the __________ on a sample of gas at a constant temperature (because.

Gases. The Nature of Gases  1. Gases have mass –A car tire weighs more with air in it than it would completely empty.  2. It is easy to compress a gas.

The Gas Laws. As P (h) increases V decreases Apparatus for Studying the Relationship Between Pressure and Volume of a Gas.

GAS LAWS Boyle’s Charles’ Gay-Lussac’s Combined Gas Ideal Gas Dalton’s Partial Pressure.

V  1/P (Boyle’s law) V  T (Charles’s law) P  T (Gay-Lussac’s law) V  n (Avogadro’s law) So far we’ve seen… PV nT = R ideal gas constant: R =

11.8 & 11.9 Three Gas Laws & Combined Gas Law. If we place a balloon in liquid nitrogen it shrinks: How Volume Varies With Temperature So, gases shrink.

PERFORMANCE OBJECTIVES Predict, write, and balance chemical equations Recognize types of reactions Use the Kinetic Molecular Theory explain the relationship.

Applied General Chemistry. Temperature (T): Kelvin. 0 F, R. 0 C Volume (V): Liters, m3, Lt/mol # of Molecules (n): mole Pressure (P): kPa, Pa, bars, psi,

IB1 Chemistry Quantitative chemistry Apply the concept of molar volume at standard temperature and pressure in calculations Solve problems.

WARM UP How many grams of helium are required to fill a 725 L hot air balloon to a pressure of 1425 mmHg at 55° C?

Chapter 11 Review.

Combined Gas Law.

Quantitative chemistry

(same ratio for every gas)

Boyle’s Law P α 1/V This means Pressure and Volume are INVERSELY PROPORTIONAL if moles and temperature are constant (do not change). For example, P goes.

Boyle’s Law: Pressure-Volume Relationship

Gas Laws Chapter 11 Section 2.

Stoichiometery of gases and solutions

Chapter 11 The Gas Laws Section 2.

Unit 1 Review Quantitative Chemistry

Presentation transcript:

Starter Question 2. Zn + I2 → ZnI2 Zinc reacts with iodine in a synthesis reaction. a) Determine the theoretical yield if a 125.0g sample of zinc was used. b) Determine the percentage yeild if 515.6g product is recovered. 3. Is the reaction between gold and oxygen possible? Explain your answer. 2NaOH + H2SO4 → Na2SO4 + 2H2O 20cm3 of 0.2mol/l sulfuric acid exactly neutralises a quantity of 0.5mol/l sodium hydroxide solution. What volume of alkali must have been reacted? 2. Zn + I2 → ZnI2 Zinc reacts with iodine in a synthesis reaction. a) Determine the theoretical yield if a 125.0g sample of zinc was used. b) Determine the percentage yeild if 515.6g product is recovered. 3. Is the reaction between gold and oxygen possible? Explain your answer.

Exit Ticket 0.24 moles of a salt is dissolved to make 1.2l of solution. What is the concentration of the solution? 2. Aqueous solutions of aluminum chloride and sodium hydroxide are mixed, forming the precipitate aluminum hydroxide. Write a balanced ionic equation for this reaction 3. Predict if the following reaction will occur. If it does write a balanced equation for the reaction Cl2(g) + HF(aq) → Answer the following questions then hand in. When you have completed both these tasks you may pack up 0.24 moles of a salt is dissolved to make 1.2l of solution. What is the concentration of the solution? 2. Aqueous solutions of aluminum chloride and sodium hydroxide are mixed, forming the precipitate aluminum hydroxide. Write a balanced ionic equation for this reaction 3. Predict if the following reaction will occur. If it does write a balanced equation for the reaction Cl2(g) + HF(aq) →

The Gas Laws You need to know about 5 of these laws Boyle’s Law Combined Gas Law Charles’s Law Gay- Lussac’s Law and finally The Ideal Gas Law

P1V1 = P2V2 Boyle’s Law Named after Robert Boyle One of the founders of modern Chemistry Boyles Law states that for a given mass of a gas, at constant temperature, pressure and volume are inversly proportional P1V1 = P2V2

V1T2 = V2T1 Charles’s Law This law is credited to Jacques Charles Invented the hydrogen filled balloon for air travel, think blimps Charles’s law states that at constant pressure the volume of a gas increases as temperature increases V1T2 = V2T1

P1T2 = P2T1 Gay- Lussac’s Law This law is named after Joseph Louis Gay- Lussac Co discovered Boron and recognised iodine as a separate element This law states that if the volume of a gas remains constant then the pressure is directly proportional to the temperature P1T2 = P2T1

Combined Gas Law P1V1 = P2V2 T1 T2 As is suggested by the name this law combines each of the previous ones into one rule P1V1 = P2V2 T1 T2 NB: For all gas law calculations temperature must be in Kelvin and volume in litres.

PV = nRT The Ideal Gas Law This law combines Boyle’s and Charles’s Law with Avogadro’s Law Avogadro’s Law states that if two gases have the same pressure and temperature then equal volumes of the two gases will have the same number of molecules. PV = nRT pressure temperature, K gas constant volume number of moles

Now try the following problems 4. A helium filled balloon at sea level has a volume of 2.1l at 0.998 atm and 36oC. If it is released and rises to an elevation at which the pressure is 0.900 atm and the temperature is 28oC, what will be the new volume of the balloon? 3. The pressure in an automobile tire is 1.88atm at 25.0oC. What will be the pressure if the temperature warms up to 37.0oC 2. A gas at 89oC occupies a volume of 0.67l. At what temperature will the volume increase to 1.12l? 1. The volume of a gas at 99.0kPa is 300ml. If the pressure is increased to 188kPa, what will be the new volume? 2. A gas at 89oC occupies a volume of 0.67l. At what temperature will the volume increase to 1.12l? 3. The pressure in an automobile tire is 1.88atm at 25.0oC. What will be the pressure if the temperature warms up to 37.0oC 4. A helium filled balloon at sea level has a volume of 2.1l at 0.998 atm and 36oC. If it is released and rises to an elevation at which the pressure is 0.900 atm and the temperature is 28oC, what will be the new volume of the balloon?

Today’s Task Complete the gas law worksheet