Study Guide for Chapters 4-6

 Calculate the density of a gas under non-STP conditions  Know Dalton’s Law of Partial Pressures o Solve problems involving mixtures of gases o Solve problems involving collecting a gas over water  Know the mole fraction equation o solve for the partial pressure of a gas within a mixture of gases  Calculate o kinetic energy of a gas depending on its temperature o root mean square velocity of a gas depending on its temperature and molar mass  Compare the rate of effusion of two gases o qualitatively o quantitatively  Compare the distance of diffusion of two gases o qualitatively o quantitatively  Real Gases o Describe why and how gases deviate from ideal behavior o under what conditions do you see the most deviation from ideal behavior? Chapter 4 Questions: 1. Balance the following chemical equations: a. ___AgI + ___Na 2 S  ___Ag 2 S + ___NaI b. ___Mg(OH) 2 + ___HCl  ___MgCl 2 + ___H 2 O c. ___TiCl 4 + ___H 2 O  ___TiO 2 + ___HCl d. ___HNO 2  ___HNO 3 + ___NO + ___H 2 O 2. The following reaction is used to form lead(II) iodide crystals. What mass of lead(II) iodide could be formed from 250.0g of lead(II) acetate? Pb(C 2 H 3 O 2 ) 2 + 2KI  PbI 2 + 2KC 2 H 3 O 2 3. A reaction combines 64.81g of silver nitrate with 92.67g of potassium bromide: AgNO 3 + KBr  AgBr + KNO 3 a. Which reactant is limiting? Which is excess? b. What is the theoretical yield of silver bromide? c. If the actual yield of silver bromide is 14.77g, what was the percent yield? Chapter 5 Questions: 1. Write the dissociation equation for K 3 PO 4 in water. 2. Which of the following substances would be soluble in water? a. CH 3 CH 2 OH b. C 6 H 6 c. LiBr 3. Classify the following as strong, weak, or nonelectrolytes: a. CH 3 CH 2 OH b. HCl c. NH 3 4. What is the molarity of 49.74g of H 2 SO 4 dissolved in enough water to make 500.mL of solution? 5. Calculate the concentration of sodium ions in 0.25M Na 3 PO 4 6. Describe how you would prepare 250.mL of 1.0M Na 2 SO 4 7. Describe how you would prepare 500.mL of 1.0N H 2 SO 4 from 17.8M H 2 SO 4