OWLv2 6-Months Printed Access Card for Kotz/Treichel/Townsend's Chemistry & Chemical Reactivity, 9th, 9th Edition

9th Edition

ISBN: 9781285460680

Author: Kotz, Treichel, Townsend

Publisher: Cengage Learning

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Chapter 15.6, Problem 2.1ACP

Freezing point depression is one means of determining the molar mass of a compound. The freezing point depression constant of benzene is −5.12 °C/m.

a. When a 0.503 g sample of the white crystalline dimer is dissolved in 10.0 g benzene, the freezing point of benzene is decreased by 0542 °C. Verify that the molar mass of the dimer is 475 g/mol when determined by freezing point depression. Assume no dissociation of the dimer occurs.
b. The correct molar mass of the dimer is 487 g/mol. Explain why the dissociation equilibrium causes the freezing point depression calculation to yield a lower molar mass for the dimer.

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Chapter 15.6, Problem 1.2ACP

Chapter 15.6, Problem 2.2ACP

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Chapter 15 Solutions

OWLv2 6-Months Printed Access Card for Kotz/Treichel/Townsend's Chemistry & Chemical Reactivity, 9th, 9th Edition

Ch. 15.2 - Write the equilibrium constant expression for each...Ch. 15.2 - Answer the following questions regarding the...Ch. 15.3 - A solution is prepared by dissolving 0.050 mol of...Ch. 15.4 - At some temperature. Kc = 33 for the reaction...Ch. 15.4 - The decomposition of PCl5(g) to form PCl3(g) and...Ch. 15.5 - The conversion of oxygen to ozone has a very small...Ch. 15.6 - Equilibrium exists between butane and isobutane...Ch. 15.6 - Anhydrous ammonia is used directly as a...Ch. 15.6 - Prob. 1.2ACP Ch. 15.6 - Freezing point depression is one means of...

Ch. 15.6 - Prob. 2.2ACP Ch. 15.6 - A 0.64 g sample of the white crystalline dimer (4)...Ch. 15.6 - Predict whether the dissociation of the dimer to...Ch. 15.6 - Prob. 2.5ACP Ch. 15 - Write equilibrium constant expressions for the...Ch. 15 - Write equilibrium constant expressions for the...Ch. 15 - Kc = 5.6 1012 at 500 K for the dissociation of...Ch. 15 - The reaction 2 NO2(g) N2O4(g) has an equilibrium...Ch. 15 - A mixture of SO2, O2, and SO3 at 1000 K contains...Ch. 15 - The equilibrium constant Kc, for the reaction 2...Ch. 15 - The reaction PCl5(g) PCl3(g) + Cl2(g) was...Ch. 15 - An equilibrium mixture of SO2, O2, and SO3 at a...Ch. 15 - The reaction C(s) + CO2(g) 2 CO(g) occurs at high...Ch. 15 - Hydrogen and carbon dioxide react at a high...Ch. 15 - A mixture of CO and Cl2 is placed in a reaction...Ch. 15 - You place 0.0300 mol of pure SO3 in an 8.00-L...Ch. 15 - The value of Kc for the interconversion of butane...Ch. 15 - Cyclohexane, C6H12, a hydrocarbon, can isomerize...Ch. 15 - The equilibrium constant for the dissociation of...Ch. 15 - The equilibrium constant, Kc, for the reaction...Ch. 15 - Carbonyl bromide decomposes to carbon monoxide and...Ch. 15 - Iodine dissolves in water, but its solubility in a...Ch. 15 - Which of the following correctly relates the...Ch. 15 - Which of the following correctly relates the...Ch. 15 - Consider the following equilibria involving SO2(g)...Ch. 15 - The equilibrium constant K for the reaction CO2(g)...Ch. 15 - Calculate K for the reaction SnO2(s) + 2 CO(g) ...Ch. 15 - Calculate K for the reaction Fe(s) + H2O(g) ...Ch. 15 - Relationship of Kc and Kp: (a) Kp for the...Ch. 15 - Relationship of Kc and Kp: (a) The equilibrium...Ch. 15 - Dinitrogen trioxide decomposes to NO and NO2, in...Ch. 15 - Kp for the following reaction is 0.16 at 25 C: 2...Ch. 15 - Consider the isomerization of butane with an...Ch. 15 - The decomposition of NH4HS NH4HS(s) NH3(g) +...Ch. 15 - Suppose 0.086 mol of Br2 is placed in a 1.26-L...Ch. 15 - The equilibrium constant for the reaction N2(g) +...Ch. 15 - Kp for the formation of phosgene, COCl2, is 6.5 ...Ch. 15 - The equilibrium constant, Kc, for the following...Ch. 15 - Carbon tetrachloride can be produced by the...Ch. 15 - Equal numbers of moles of H2 gas and I2 vapor are...Ch. 15 - The equilibrium constant for the butane isobutane...Ch. 15 - At 2300 K the equilibrium constant for the...Ch. 15 - Which of the following correctly relates the two...Ch. 15 - Consider the following equilibrium: COBr2(g) ...Ch. 15 - Heating a metal carbonate leads to decomposition....Ch. 15 - Phosphorus pentachloride decomposes at elevated...Ch. 15 - Ammonium hydrogen sulfide decomposes on heating....Ch. 15 - Ammonium iodide dissociates reversibly to ammonia...Ch. 15 - When solid ammonium carbamate sublimes, it...Ch. 15 - In the gas phase, acetic acid exists as an...Ch. 15 - Assume 3.60 mol of ammonia is placed in a 2.00-L...Ch. 15 - The total pressure for a mixture of N2O4 and NO2...Ch. 15 - Kc for the decomposition of ammonium hydrogen...Ch. 15 - Prob. 52GQ Ch. 15 - A 15-L flask at 300 K contains 6.44 g of a mixture...Ch. 15 - Lanthanum oxalate decomposes when heated to...Ch. 15 - The reaction of hydrogen and iodine to give...Ch. 15 - Sulfuryl chloride, SO2Cl2 is used as a reagent in...Ch. 15 - Hemoglobin (Hb) can form a complex with both O2...Ch. 15 - Limestone decomposes at high temperatures....Ch. 15 - At 1800 K, oxygen dissociates very slightly into...Ch. 15 - Nitrosyl bromide, NOBr, dissociates readily at...Ch. 15 - A Boric acid and glycerin form a complex...Ch. 15 - The dissociation of calcium carbonate has an...Ch. 15 - A sample of N2O4 gas with a pressure of 1.00 atm...Ch. 15 - Prob. 64GQ Ch. 15 - The photograph below shows what occurs when a...Ch. 15 - The photographs below (a) show what occurs when a...Ch. 15 - Decide whether each of the following statements is...Ch. 15 - Neither PbCl2 nor PbF2 is appreciably soluble in...Ch. 15 - Characterize each of the following as product- or...Ch. 15 - The size of a flask containing colorless N2O4(g)...Ch. 15 - Describe an experiment that would allow you to...Ch. 15 - The chapter opening photograph (page 670) showed...Ch. 15 - Suppose a tank initially contains H2S at a...Ch. 15 - Pure PCl5 gas is placed in a 2.00-L flask. After...

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Solution Summary: The author explains that dissociation equilibrium causes the freezing point depression to yield a lower molar mass.

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