BIOL 1020 ACS 2 Final Exam Study Guide General Chemistry II Ultimate Solutions Colligative Properties Molality Mole Fraction Solubility Gas Solubility Henry Law Freezing Point Depression Van’t Hoff Factor Electrolytes Reaction Kinetics Rate Laws Reacti

Auburn University BIOL 1020 ACS 2 Final Exam Study Guide General Chemistry II Ultimate Solutions Colligative Properties Molality Mole Fraction Solubility Gas Solubility Henry Law Freezing Point Depression Van’t Hoff Factor Electrolytes Reaction Kinetics Rate Laws Reaction Order Half Life Integrated Rate Laws First Order Reactions Chemical Equilibrium Thermodynamics Practice Exam Questions Verified and Provided with Complete A+ Graded Answers Latest Updated 2026 C Where is the hydrophilic (attracted to water) region of the molecule? (A) Region 1 (B) Region 2 (C) Region 3 (D) The three regions are equally hydrophilic C Which molecule is most soluble in water? D A solution of NaCl in water has a concentration of 20.5% by mass. What is the molal concentration of the solution? Molar Mass NaCl = 58.44 g/mol (A) 0.205 m (B) 0.258 m (C) 3.51 m (D) 4.41 m B What is the mole fraction of water in 200 g of 89% (by mass) ethanol, C2H5OH? Molar Mass C2H3OH = 46 g/mol (A) 0.11 (B) 0.24 (C) 0.32 (D) 0.76 D A mixture of 100 g of K2Cr2O7 and 200 g of water is stirred at 60 degrees C until no more of the salt dissolves. The resulting solution is poured off into a separate beaker, leaving the undissolved solid behind. The solution is now colled to 20 degrees C. What mass of K2Cr2O7 crystallizes from the solution during the cooling? (A) 9 g (B) 18 g (C) 31 g (D) 62 g A Carbonated beverages have a fizz because of gas dissolved in the solution. What increases the concentration of gas in a solution? (A) cooling the solution (B) heating the solution (C) increasing the volume of solution (D) decreasing the volume of solution D When 100 g of an unknown compound was dissolved in 1.00 kg of water, the freezing point was lowered by 6.36 degrees C. What is the identity of this unknown compound? Kf for water = 1.86 degrees C/m (A) CsCl (B) KCl (C) LiF (D) NaCl A Which 0.1 molal aqueous solution will have the lowest freezing point? (A) Al(NO3)3 (B) CaCl2 (C) C2H5OH (D) NaCl B What is the rate law of this reaction? 2H2 (g) + 2NO (g) -- N2 (g) + 2H2O (g) (A) rate = k[H2]^2 [NO] (B) rate = k[H2] [NO]^2 (C) rate = k[H2]^2 [NO]^2 (D) rate = k[N2] [H2O]^2 / [H2]^2 [NO]^2 B The rate law for the reaction A + B -- C + D is first order in [A] and second order in [B]. If [A] is halved and [B] is doubled, the rate of the reaction will