PPT-Acid – Base Titrations

Titration of HCl with NaOH 000 mL Titrant Added   Titration Reaction   H OH H 2 O   end 01000 M 0 M lots     Equilibrium Reaction. 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! . 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!. 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.. 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:. This lecture presents the basic concepts of pharmaceutical inorganic chemistry with emphasis on the description, mechanisms and uses of various pharmaceutical products which are clinically used to correct various body disorders. The major topics to be covered are acids and bases, intra and extra cellular electrolytes, the gastrointestinal agents and topical agents frequently employed in the conversion of drugs to chemical forms convenient to their product formulations.. 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..