Exhaled breath forms fog on a cold morning

GENERAL CHEMISTRY 1

GENERAL CHEMISTRY 3

Course title: General Chemistry II

Course Code: CHM 151

Student Name:

Submission Date: th April 2017

8.Write the for dissolution and the solubility product (Ksp) expression for each of the following slightly soluble ionic compounds: (a) PbCl2 (b) Ag2S (c) Sr3(PO4)2 (d) SrSO4

14.Assuming that no equilibria other than dissolution are involved, calculate the molar solubility of each of the following from its solubility product:

(a) Ag2SO4

(b) PbBr2

(c) AgI

(d) CaC2O4H2O

28. The are found in mixtures of ions in equilibrium with . From the concentrations given, calculate Ksp for each of the slightly soluble solids indicated:

(a) AgBr: [Ag+] = 5.7 107 M, [Br] = 5.7 107 M

(b) CaCO3: [Ca2+] = 5.3 103 M, [CO3 2] = 9.0 107 M

(c) PbF2: [Pb2+] = 2.1 103 M, [F] = 4.2 103 M

(d) Ag2CrO4: [Ag+] = 5.3 105 M, 3.2 103 M

(e) InF3: [In3+] = 2.3 103 M, [F] = 7.0 103 M

54. Calculate the molar solubility of AgBr in 0.035 M NaBr (Ksp = 5 1013).

CHAPTER 16

4.A helium-filled balloon spontaneously deflates overnight as He atoms diffuse through the wall of the balloon. Describe the redistribution of matter and/or energy that accompanies this process.

12.Arrange the of systems in order of increasing entropy. Assume one mole of each substance and the same temperature for each member of a set.

(a) H2(g), HBrO4(g), HBr(g)

(b) H2O(l), H2O(g), H2O(s)

(c) He(g), Cl2(g), P4(g)

16.Predict the sign of the entropy change for the .

(a) An ice cube is warmed to near its melting point.

(b) Exhaled breath forms fog on a cold morning.

(c) Snow melts

16.Predict the sign of the entropy change for the following processes.

(a) An ice cube is warmed to near its melting point.

(b) Exhaled breath forms fog on a cold morning.

(c) Snow melts