Slide 1 of 45  Worked Examples Follow:. Slide 2 of 45.

Slides:



Advertisements
Similar presentations
1. Beginning – pH rises gradually as base added, pH remains relatively constant event though small amounts of base are being added – first amount of titrants.
Advertisements

III. Titration (p ) Ch. 15 & 16 - Acids & Bases.
Principles & Modern Applications
Acid-Base Titrations progressive addition of one reactant to another in measured volumes until an endpoint is reached. equivalence point (mL) is when.
Slide 1 of Acid-Base Indicators  Color of some substances depends on the pH. HIn + H 2 O In - + H 3 O + In the acid form the color appears to.
Lecture 203/13/06. Titration Why use? Equivalence point vs. Endpoint Math?
Lecture 193/14/05 Spring Break Quiz Seminar today.
Lecture 172/28/07 LECTURE TONIGHT. Titration Curve Why do you use one? Equivalence point vs. Endpoint pH vs. acid/base added.
Lecture 193/12/07. Sample (100 mL – 0.1 M) Titrant (0.2 M) Initial pH pH at equivalence point pH at 2X equivalence point X-axis at equivalence point Strong.
Lecture 23 10/28/ mL of 0.02 M KOH with 0.1 M HBr Construct curve from 4 points Initial pH X = 0 mL, Y = ? Equivalence point X = V eq, Y = 7 Before.
Calculate the pH of a solution that is 0.20 M in NaCH 3 COO and 0.10 M in CH 3 COOH
Lecture 213/15/06 Environmental Club Meeting  Today at 5:30  Laska classroom 317.
Lecture 183/4/05 Spring Break QUIZ. Quiz 6 1. What is the pH of a buffer solution containing 0.3 M HNO 2 and 0.25 M NaNO 2 ? K a (HNO 2 ) = 4.5 x
213 PHC. Indicators  Describe the indicator theory.  Select a suitable indicator for a particular reaction.  Explain the different stages of strong.
© University of South Carolina Board of Trustees Calculate the pH in the titration of mL of M HCl with M NaOH after a) 0.00 mL strong.
Procedure for calculating pH of a titration Volume of titrant needed is based on amount of analyte.
Acid/Base Titrations. Titrations Titration Curve – always calculate equivalent point first Strong Acid/Strong Base Regions that require “different” calculations.
Acid-Base Titrations.
Titration. What is It? Acid and base combined together Graph of pH as a function of volume of titrant is called a titration curve.
© University of South Carolina Board of Trustees Chapt. 16 More Acids and Bases Sec. 2 Titration: Strong Acid + Strong Base.
Indicators Substances that change color to signal the end of a titration.
Acid-Base Titration Chemistry 117
Titration 1.
© University of South Carolina Board of Trustees Determine the number of moles of Na(CH 3 COO) that must be added to 250 mL of 0.16 M CH 3 COOH to prepare.
Buffers and Acid/Base Titration. Buffered Solutions  A solution that resists a change in pH when either hydroxide ions or protons are added.  Buffered.
Acid/Base Titration Buffers. Buffers A mixture composed of a weak acid and its conjugate base (acidic buffer) OR weak base and its conjugate acid (basic.
Titration What is It? Acid and base combined together Graph of pH as a function of volume of titrant is called a titration curve.
Titration. Weak Acid/Strong Base Titration Curve pH starts higher Rapid rise and then levels into a zone where pH doesn’t change much (buffering zone)
Chapter 10: Lesson 5 -Titration- Chapter 10: Lesson 5 -Titration-
Experiment 25 Determination of K a for a Weak Acid CHE1181.
Titration and pH Curves..   A titration curve is a plot of pH vs. volume of added titrant.
1 Acid-Ionization Titration Curves  An acid-base titration curve is a plot of the pH of a solution of acid (or base) against the volume of added base.
Acid - Base Titration. What is a Titration? A titration is a procedure used in chemistry to determine the concentration of an unknown acid or base. A.
Why do Titration Curves Look Like THAT ???? 1/4/20161.
Loose Ends from Bell Work An acidic solution makes the color of pH paper turn ___________________, while a basic solution makes the color of pH paper turn.
C. Johannesson III. Titration Ch. 14 & 15 - Acids & Bases.
10.3Acid-Base Stoichiometry. Titration A method for determining the concentration of a solution by reacting a known volume of that solution with a solution.
See summary: top of p.778 in textbook
Titrations Chapter 13.
Titration. Titration of a Strong Acid by a Strong Base Consider what happens to the pH of 25 mL of 0.2 M HCl as it is titrated with 25 mL of 0.2 M NaOH.
Titration  Lab technique commonly utilized to determine an UNKNOWN concentration of a chemical compound with a KNOWN concentration of another chemical.
Titration. Using an acid (or base) of known concentration to neutralize a base (or acid) of unknown concentration. –Using the burets and indicator.
213 PHC Dr. Mona AlShehri 5th Lecture. (1) Gary D. Christian, Analytical Chemistry, 6 th edition.
TITRATIONS AND PH CURVES AP CHEM CH 15. Review H-H What is the pH of a buffer that is made by dissolving 50.0g of sodium acetate in 500.mL of 0.300M acetic.
Titration Curves. Problem   50.0 mL of 0.10 M acetic acid (K a = 1.8 x ) are titrated with 0.10 M NaOH. Calculate the pH after the additions of.
Titration A standard solution is used to determine the concentration of another solution.
Acid-Base Titrations End point and equivalence point
Titration and pH Curves.
And Strong Acid Weak Base
Titration and pH Curves.
Acids & Bases Titration.
Wake-up Strong acids completely ionize in water. Explain what this means. Name the following acids/bases: a. HNO2 b. Hydrosulfuric acid c. Be(OH)2.
Acid-Base Titration Titration is a chemical analysis involving the addition of a known concentration of titrant to a known volume but unknown concentration.
Acids & Bases III. Titration.
NH4+ (aq) H+ (aq) + NH3 (aq)
Titrations.
Titration.
Determination of Ka for a Weak Acid
-5 M Review: 50 mL of 0.1 M carbonic acid, H2CO3, with an initial pH of 3.5, is titrated with 0.2 M lithium hydroxide, LiOH. What volume of.
Titrations & Buffer solutions
Quiz 1. A solution of H3PO4 and its associated forms has a pH of What is the principal species? For H3PO4, pKa1 = 2.148, pKa2 = 7.199, pKa3 =
Ch. 15 & 16 - Acids & Bases III. Titration (p )
Titrations.
Titrations.
Chapter 4.8 Review Acid-Base Reactions.
Weak acid – strong base titrations:
Ch. 15 & 16 - Acids & Bases III. Titration (p )
17.3 Acid-Base Titrations.
Ch. 15 & 16 - Acids & Bases III. Titration (p )
Special Conditions for Buffers
Presentation transcript:

Slide 1 of 45  Worked Examples Follow:

Slide 2 of 45

Slide 3 of 45

Slide 4 of 45

Slide 5 of 45

Slide 6 of 45

Slide 7 of 45

Slide 8 of 45

Slide 9 of 45

Slide 10 of 45  CRS Questions Follow:

Slide 11 of 45 volume of titrant / ml pH equivalence point The titration curve to the right best represents the titration of : 1. a weak base with a strong acid. 2. a weak acid with a strong base. 3. a strong acid with a strong base. 4. a strong base with a strong acid.

Slide 12 of 45 volume of titrant / ml pH equivalence point The titration curve to the right best represents the titration of: 1. a weak base with a strong acid. 2. a weak acid with a strong base. 3. a strong acid with a strong base. 4. a strong base with a strong acid.

Slide 13 of 45 volume of titrant / ml pH volume of titrant / ml pH volume of titrant / ml pH Which of the following titration curves best represents the titration of 15.0 mL of M NaOH with M HCl?

Slide 14 of 45 volume of titrant / ml pH volume of titrant / ml pH volume of titrant / ml pH Which of the following titration curves best represents the titration of 15.0 mL of M NaOH with M HCl?

Slide 15 of 45 When titrating a solution containing a weak acid such as acetic acid, the pH at the endpoint of the titration: 1. depends on the indicator used 2. is below is above 7.0

Slide 16 of 45 When titrating a solution containing a weak acid such as acetic acid, the pH at the endpoint of the titration: 1. depends on the indicator used 2. is below is above 7.0

Slide 17 of 45  Try end of chapter questions beginning on page 737:  # 1, 7, 9, 23, 39, 41, 97, 98, 99, 100