Module 9 Overview & Instructions

 

PRT 1220Solubility; Coordination Complexes; Entropy

Foreword

This week, we learn more details about solubility before learning about coordination complexes.  We end the week by beginning a detailed study of thermodynamics especially applied to chemical systems.  This week's material marks the end of the material for which you'll be responsible for Midterm Exam 3.

Questions and Answers

Whatever you're struggling with this week, somebody else in our section probably is struggling with it, too.  Post your question on the Module 9 Q&A Board.

If you know the answer to someone's question, post it.  It's almost a certainty that more people in our section than just the person who posted the question want to know the answer.

 

Learning Outcomes/Objectives

By the conclusion of this learning module, you should be able to:

  • understand the effect of pH on the solubility of certain ionic compounds, especially metal hydroxides.
  • understand the basics of complex-ion formation and its effect on the solubility of an ionic compound.
  • calculate the molar solubility of an ionic compound in a solution that forms a complex ion with a component of that compound.
  • understand the difference between a coordinate covalent bond and a regular covalent bond.
  • gain a familiarity with the kinds of molecules and ions that can act as ligands.
  • recognize different kinds of isomers in coordination complexes.
  • understand the basic ideas of crystal-field theory for octahedral complexes.
  • predict the number of d-electrons for a metal ion in a coordination complex.
  • understand the relationship between the magnetic properties of a complex, its number of d-electrons, and the arrangement of those electrons.
  • understand the basic relationship between the color of an octahedral complex and the splitting energy of its d-orbitals.
  • remember some details from CHEM 1210 about energy, work, and heat.
  • understand what distinguishes an irreversible process from a reversible process.
  • understand the connections between probability and entropy.
  • state in simple terms the laws of thermodynamics.
  • predict the sign of ΔΔS for a chemical reaction or physical process.

 

Stuff to Read, Watch, Think About, and Study

Before you watch the videos below, download the  Download Module 9 Slides

, and use them to take notes as you follow along.

 

read:  Multiple Equilibria Links to an external site.

watch:  Solubility Equilibria and pH; due by July 13 at 23:59 MDT

watch:  Precipitation Reactions; due by July 13 at 23:59 MDT

 

read:  Lewis Acids and Bases Links to an external site.

watch:  Solubility and Complex-Ion Formationdue by July 13 at 23:59 MDT

practice:  zero-stakes practice --  Download Solubility and Precipitation Study Problems

Download Solubility and Precipitation Study Problems key

do:  WebAssign HW -- Multiple Equilibria and Precipitation; due by July 13 at 23:59 MDT

do:  WebAssign timed (75) quiz -- Solubility Equilibria; due by July 13 at 23:59 MDT

 

read:  Coordination Chemistry of Transition Metals Links to an external site.

watch:  Coordination Complexes -- Structuredue by July 16 at 23:59 MDT

 

read:  Spectroscopic and Magnetic Properties of Coordination Compounds Links to an external site.

watch:  Color and Magnetism in Octahedral Complexesdue by July 16 at 23:59 MDT

do:  WebAssign HW -- Coordination Complexes; due by July 16 at 23:59 MDT

 

read:  Spontaneity Links to an external site.; Entropy Links to an external site.

watch:  Energy, Heat, and Workdue by July 16 at 23:59 MDT

watch:  The Arrow of Timedue by July 16 at 23:59 MDT

watch:  The Spontaneous Generation of Orderdue by July 16 at 23:59 MDT

do:  WebAssign HW -- Spontaneity & Entropy; due by July 16 at 23:59 MDT