Hemet High  ChemistryName: Pd:

Second Semester

Final Exam Review

Chapter 10

  1. What is an ideal gas?
  1. What types of elements in the periodic table behave most like an ideal gas?
  1. How much energy is absorbed when 68.2 g of water boils?
  1. What mass of water is required to release 3.95 x 105 kJ of energy when it freezes?

Chapter 11

  1. Convert the following:
  2. 789.89 mm Hg to kPa
  1. 1.325 atm to Torr
  1. 98°C to Kelvin
  1. A container holds 2 gases: CO and Ar. The partial pressures of the 2 gases are 4.52 atm and 6.84 atm, respectively. What is the total pressure?
  1. A gas at 1.25 atm cools from 323.0 K to 273.15 K at constant volume. Find pressure.
  1. 550.0 mL of a gas was collected at 293 K and 720.0 mm Hg. Find volume at STP.
  1. Equal amounts of He and Kr are placed in a porous container and allowed to escape: Which gas will escape faster and How much faster?
  1. How many grams are in 98 L of O2 at STP?

Chapter 12

  1. You have 4.6 L of solution that contains 45.0 g of KI. What is the molarity of the solution?
  1. How many moles of HCl are in 0.95 L of a 0.8 M HCl solution?
  1. A solution was prepared by dissolving 18.5 g NaOH in 0.360 kg of water. What is the molality of the solution?
  1. How many grams of 1.0 m AgNO3 are needed to provide 6.3 moles of pure AgNO3?
  1. How many liters of a 10.0 M solution of H2SO4 are needed to make 5.6 L of 1.9 M H2SO4?

Chapter 13

  1. Calculate Δtf of 37.9g of solute(molar mass=32.5g)in 675.0g H2O. Kf=-1.86°C/m.
  1. Calculate Δtb of 28.6g of solute(molar mass=19.8g)in 400.0g H2O. Kb=0.51°C/m.

Chapter 14/15

  1. Find the [H3O+] of 2.5 x 10-5 M H2SO4
  1. Find the [OH-] of 6 x 10-3 M HCl
  2. Find the pH when [H3O+] = 1 x 10-3 M
  1. Find the [H3O+] when pH = 8.9
  1. What volume of 4 M NaOH is needed to exactly neutralize 2.75 liters of 3.0 M H2SO4 ?

Chapter 16/17

  1. Determine the specific heat of a material if a 54 g sample absorbed 96 J as it was heated from 20°C to 46°C.
  1. The temp of a 92 g sample of material increases from 15°C to 45°C when it absorbs 1580 J of energy as heat. What is it‘s specific heat?

Chapter 18

  1. At equilibrium, [N2] = 1.3 M, [H2] = 1.6 M, and [NH3] = 2.8 M. Calculate the value of Keq for this reaction. N2(g) + 3H2(g)  2NH3(g)
  1. Hydrogen gas and Carbon Dioxide react to form Water and Carbon Monoxide. Write balanced chemical equation and equilibrium expression for the reaction.
  1. At equilibrium, [NO] = 0.80 M, [O2] = 0.50 M, and [NO2] = 0.60 M. Calculate the value of Keq for this reaction. 2NO(g) + O2(g)  2NO2(g)
  1. Would a reaction with a Keq value of 1.8 favor products or reactants?
  1. Would a reaction with a Keq value of 0.2 favor products or reactants?

Chapter 21

  1. You have 180 g of Iodine, which has a half-life of 6.0 days.

How many half-lives are in 48 days?

How many grams of an original 160 g sample will remain after 3 half-lives?

  1. 100 grams of radium-226 decayed to 12.5 grams in 4,797 years. What is the half life of radium-226?

Chapter 22

From Chapter 22, you will need to know how to name alkanes, alkenes, and alkynes. No drawing. Also know the names of the 8 functional groups.