Drill: 5.3 kg of sodium carbonate is heated strongly. Determine products Balance reaction Calculate the volume of gas produced when calculated at STP

Drill: Calculate the mass of (NH4)2SO4 produced when 11 Drill: Calculate the mass of (NH4)2SO4 produced when 11.2 mL NH3 gas reacts is excess H2SO4 in the following rxn: NH3 + H2SO4  (NH4)2SO4

Homework AP Read Ch 5 Work problems: 11, 13, 15, 29, 31, 33, 41, 43, 51, & 69

Chm II Homework Read Ch 12 Look over PP-11 attached on the Poly website.

Kinetic Theory

All matter is made up of tiny particles The particles are in constant motion All collisions are elastic

Drill: Calculate the volume at STP of CO2 released when 23.4 g of aluminum carbonate is decomposed 75 % through heat

AP Test Changes No Choices in Problems Only 3 reactions with predicting products Balance rxns No choices Explain rxns

Pressure

Force per unit area Caused by collisions against a surface Gas measured in pressure

Units of Pressure kPa: kilopascal (Std Unit) Pascal: newton/sq. meter Atmosphere (Atm): mm Hg:

Standard Pressure 101.3 kPa (to be changed) 1.00 Atm 760 mm Hg or Torrs 30.0 inches Hg 1013 millibars

Gas Laws

State the Following Laws Boyle’s Law Charles’ Law Gay Lussac’s Law Dalton’s Law Graham’s Law

Boyle’s Law

The pressure & volume of a gas at constant temperature are inversely proportioned P1V1 = P2V2 = K

Charles’ Law

The volume and temperature of a gas at constant pressure are directly proportioned V1/T1 = V2/T2 = K

Guy Lussac’s Law

The Pressure and temperature of a gas at constant volume are directly proportioned P1/T1 = P2/T2 = K

Combined Gas Law

Combination of the three formulas P1V1 /T1 = P2V2/T2

Chm II Homework Read Ch 12 Work problems: 31, 32, & 33 on page 477

Calculate the new volume of 5 Calculate the new volume of 5.0 L of gas when its pressure is doubled and its temperature is tripled:

Common Sense V1/n1 = V2/n2 = K The volume of a gas is directly proportioned to the number of moles of gas V1/n1 = V2/n2 = K

New Combination P1V1/n1T1 = P2V2/n2T2 = K

Ideal Gas Law PV = nRT

Dalton’s Law

The total pressure = the sum of the partial pressures PT = P1 + P2 + etc

Graham’s Law

The velocities of particles are inversely proportioned to the square root of their masses v1/v2 = M2/M1

Drill: Calculate the volume of 3.0 moles of gas at -23oC under 83.1 kPa pressure.

Calculate the volume of a gas at STP when it occupies 80 Calculate the volume of a gas at STP when it occupies 80.0 mL at 127oC under 303.9 kPa pressure:

Calculate the number of moles of gas occupying 831 mL under 250 kPa at 227oC

Calculate the ratio of the velocities of He gas to HCl gas:

Chm II Homework Read Ch 12 Work problems: 51, & 58 on page 478

Calculate the mass of CO2 occupying 83.1 mL under 25 GPa at 227oC

Drill: Calculate the volume in mL of 4.0 g bromine gas at 127oC under 83.1 kPa pressure.

Ideal Gas Law PV = nRT

Related Formulas m V m/n D or r = MW =

MW = m/n n = m/MW PV = nRT

mRT MW PV PV = MW =

m V mRT PV D = MW =

m V m RT V P D = MW =

DRT P MW P RT MW = D =

Calculate the molecular mass of 5 Calculate the molecular mass of 5.0 g of gas occupying 831mL under 250 MPa at 227oC

Chm II Homework Read Ch 12 Work problems: 46 or 47 on page 478

Drill: Calculate the density of carbon dioxide at 27oC under 83 Drill: Calculate the density of carbon dioxide at 27oC under 83.1 kPa pressure

The total pressure of a system is 120. 0 kPa The total pressure of a system is 120.0 kPa. The partial pressure of gas A is 112.0 kPa. Determine the pressure of gas B

Drill: Calculate the ratio of the velocities of He gas to HCl gas:

Calculate the mass of 831 mL of CO2 at 27oC under 150 kPa pressure:

Drill:Calculate the volume of 4. 0 moles of gas under 83 Drill:Calculate the volume of 4.0 moles of gas under 83.1 kPa pressure at 127oC:

Calculate the volume of a gas at STP when it occupies 80 Calculate the volume of a gas at STP when it occupies 80.0 mL at 127oC under 303.9 kPa pressure:

5 Calculate the volume of 4. 0 moles of gas under 83 5 Calculate the volume of 4.0 moles of gas under 83.1 kPa pressure at 127oC:

Calculate the molecular mass of 50 g of gas occupying 831mL under 250 MPa at 227oC

Calculate the mass of 831 mL of CO2 at 167oC under 150 kPa pressure:

The total pressure of a system is 120. 0 kPa The total pressure of a system is 120.0 kPa. The partial pressure of gas A is 112.0 kPa. Determine the pressure of gas B

The total pressure of a system is 150. 0 kPa The total pressure of a system is 150.0 kPa. The system contains 50 % A, 30 % B, & 20 % C. Determine the pressure of each gas.

Drill: Calculate the mass of CO2 occupying 83 Drill: Calculate the mass of CO2 occupying 83.1 mL under 25 MPa at 477oC

Calculate the density of carbon dioxide at 27oC under 83 Calculate the density of carbon dioxide at 27oC under 83.1 kPa pressure

Calculate the velocity HBr when the velocity Be is 270 m/s:

Calculate the final volume that 3 Calculate the final volume that 3.0 L of gas will obtain when the absolute temperature is tripled & the pressure is halved.

Calculate the mass of CO occupying 831 kL at 227oC under 2 Calculate the mass of CO occupying 831 kL at 227oC under 2.50 Mpa pressure.

Calculate the volume of H2 formed at 27oC under 150 kPa when 6.8 mg NH3 decomposes making N2 & H2.