Module 6 Overview & Instructions

 

PRT 1220Acids and Bases

Foreword

This week, we begin our study of acids and bases, where will will apply a lot of our ideas from our general study of chemical equilibrium.  Since many of the interesting molecules with acid-base properties are carbon-based or organic, we'll first review some ideas about drawing Lewis structures, learn how to draw skeleton structures for carbon chains, and look at some common functional groups in organic chemistry.  Lots of practice is critical for this material, and there are several homework assignments.  Be sure to get an early start.  This week's material marks the end of the material for which you are responsible for Midterm Exam 2. 

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 6 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:

  • identify alcohol, ether, aldehyde, ketone, ester, carboxylic acid, amine, and amide functional groups.
  • use Ka values to calculate the pH of weak-acid solutions.
  • use Kb values to calculate the pH of weak-base solutions.
  • understand and use the relationship between pKw, pH, and pOH.
  • calculate the pH and pOH of strong-acid and strong-base solutions.
  • understand the use and behavior of acid-base indicators.
  • understand the relationship between conjugate acid-base pairs.
  • be able to recognize quickly conjugate acid-base pairs in acid-base reactions.
  • calculate the Kb and pKb of a weak base from the Ka or pKa of its conjugate acid.
  • understand the periodic trends for acidity across a period and down a group.
  • understand the inductive effect, especially for the acidity of oxoacids.
  • predict whether an aqueous solution of a salt (ionic compound) is acidic, basic, or pH-neutral.
  • understand why aqueous solutions containing metals other than Group 1 and Group 2 are acidic.

 

Stuff to Read, Watch, Think About, and Study

Before you watch the videos below, download the  Download Module 6 Slides

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

 

read:  Alcohols and Ethers Links to an external site.

watch:  Alcohols, Ethers, Aldehydes, and Ketones; due by June 22 at 23:59 MDT

practice:  zero-stakes practice --  Download organic structures study problems

;  Download organic structures study problems key

do:  WebAssign HW -- Organic Compounds; due by June 22 at 23:59 MDT

 

read:  Bronsted-Lowry Acids and Bases Links to an external site.; pH and pOH Links to an external site.

watch:  Carboxylic Acids - Introduction to Acid-Base Chemistry; due by June 22 at 23:59 MDT

watch:  pH and pOH; due by June 22 at 23:59 MDT

watch:  Weak Bases - Sex, Drugs, and Organic Chemistry; due by June 22 at 23:59 MDT

practice:  zero-stakes practice --  Download acid-base study problems

;  Download acid-base study problems key

do:  WebAssign HW -- Bronsted Acids & Bases and pH; due by June 22 at 23:59 MDT

do:  WebAssign HW -- Weak Acids & Bases; due by June 22 at 23:59 MDT

 

read:  Relative Strengths of Acids and Bases Links to an external site.

watch:  Acid-Base Indicators; due by June 25 at 23:59 MDT

watch:  Conjugate Acid-Base Pairs; due by June 25 at 23:59 MDT

watch:  Structure and Acidity; due by June 25 at 23:59 MDT

 

read:  Hydrolysis of Salt Solutions Links to an external site.

watch:  pH of Salt Solutions; due by June 25 at 23:59 MDT

practice:  zero-stakes practice --  Download more acid-base study problems

;  Download more acid-base study problems key

do:  WebAssign HW -- pH of Salt Solutions; due by June 25 at 23:59 MDT

do:  WebAssign timed (90 min) quiz -- Acids and Bases; due by June 25 at 23:59 MDT