PPT-Titrimetric procedure and Acid and Base Titrations

Ch 20 Apparatus used in Volumetric analysis A Graduated cylinder Roughly measures the volume of a liquid The volumetric flask Is used to hold a definite volume of a liquid Should always be clean so needs to be washed out with deionised water before you start. Titration. OF bleach . Due Today: . 1. Redox Titration of Bleach Pre-Lab. 2. . Copper Reduction Formal Lab Report. Homework:. 1. Redox . Titration . Short Report. 2. Gravimetric Analysis of Phosphorus Pre-Lab. Dr. Harris. Ch. 21 . Suggested HW. : . Ch. 21: 1, 13, 29. Buffers. Solutions that contain both a weak acid and its conjugate base are called . buffers. . . Buffers have the unique ability to . resist sharp changes in pH. Lab 10. Outline. Purpose. Potentiometric. Titrations. Proticity. Equivalence. pK. a. Vinegar Titration. Calculations. Waste. Following Lab Reminder. pH Probe Calibration. Purpose. Students will use a pH probe to perform potentiometric titrations to determine the mass percent of acetic acid in vinegar and the pKa of acetic acid. . Titration. Acid–Base Titration. The concentration of a weak acid or a weak base in water is difficult – if not impossible – to measure directly.. But we can calculate the concentration from the results of titration.. What did one titration tell the other?  . Let's meet at the endpoint.. Why are chemists great for solving problems?   . They have all the solutions. Titration. A lab procedure by which the concentration of acidic or alkaline solutions are examined and determined. Lesson 10. Acid-Base Titrations…. PART I: . w. hat is a titration?. h. ow is it performed?. w. hat tools are needed?. PART II: . Perform Titration calculations . A titration is a neutralization reaction! . 11-. 1. Activity: Precipitation Reactions. When a solution of lead(II) nitrate is mixed with a solution of potassium chromate, a yellow precipitate forms according to the equation:. Pb(NO. 3. ). 2. (. 2009, Prentice-Hall, Inc.. Titration. In . this technique a known concentration of base (or acid) is slowly added to a solution of acid (or base. ).. The . analyte. - is the solutions being evaluated and is of unknown concentration.. Strong Acids. HCl. HBr. HI. HNO. 3. HClO. 4. H. 2. SO. 4. Acid: a species that supplies H. +. ions to water. Strong acid: an acid that completely ionizes in water forming an H. +. ion and an anion. .. Acid-Base Titration. .. المحاضرة الثانية للجزء العملي. . . Acid-Base Titration. . Analytical chemistry. : is the analysis of material samples to understanding of their chemical composition and structure. It has a wide range of monitoring pollution in the environment, development of new materials, and drug manufacture.. 2. When mixing acid and water, always pour the acid into the water. . 3. Never allow the acid to come into contact with your skin unless your teacher has told you that it is ok. . 4. Always clean up any spilled acid as soon as possible. . REDOX AND POTENTIOMETRIC TITRATIONS. WE WILL LEARN FROM THIS CHAPTER:. ● . Balancing . redox. reactions . ● Calculating the reaction equilibrium constant from standard potentials. ● Calculating . What is in the sample?. How much is there? . What is the elemental composition?. [C, O, N, F, Cl, P, H, . etc.. ?] . ELEMENTAL ANALYSIS. . Chemical Methods. Types of Analysis:. Qualitative Analysis:. Acid. is defined as a substance which when dissolved in water gives hydrogen ions. (H +) . Examples.. Base is defined as a substance which when dissolved in water gives hydroxyl ions. (OH-) . Examples..