Analytical Chemistry - Lesson 1 PDF
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Pamantasan ng Lungsod ng Valenzuela
2025
Jerome R. Delos Santos
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Summary
This document is a lecture presentation on analytical chemistry for a college-level course. It covers fundamental concepts, qualitative and quantitative analysis, the role of analytical chemistry in various fields, common laboratory instruments and glassware, and classification of analysis methods.
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Pamantasan ng Lungsod ng Valenzuela College of Education – Science Department ANALYTICAL CHEMISTRY Mr. Jerome R. Delos Santos January 22, 2025 – 5:00 PM – 8:00 PM Objectives: 1. Understand the fundamental concepts of analytical chemistry. 2.Differentiate...
Pamantasan ng Lungsod ng Valenzuela College of Education – Science Department ANALYTICAL CHEMISTRY Mr. Jerome R. Delos Santos January 22, 2025 – 5:00 PM – 8:00 PM Objectives: 1. Understand the fundamental concepts of analytical chemistry. 2.Differentiate between qualitative and quantitative analysis; 3.Understand the role and importance of analytical chemistry in various aspects of life; 4.Exhibit familiarity with the common apparatuses and equipment in the laboratory. 5.Identify instruments and glassware that give more accurate readings. Analytical Chemistry The branch of chemistry focused on the separation, identification, and quantification of chemical components in a sample. Qualitative Quantitative Analysis Analysis Identifies Determines what how much of a substances substance is are present in present in a a sample. sample. Analyte An analyte, is a substance or chemical constituent that is of interest in an analytical procedure. A chemical substance that is the subject of chemical analysis. What does analytical chemistry have to do with CLASSIFICATION OF ANALYSIS 1. Based on the Extent of Analysis: a. Complete/Exact Analysis – amount of each constituent is determined quantitatively. Ex. Blood analysis CLASSIFICATION OF ANALYSIS 1. Based on the Extent of Analysis: b. Ultimate Analysis – amount of each element is determined. Ex. Gasoline CLASSIFICATION OF ANALYSIS 1. Based on the Extent of Analysis: c. Proximate/Partial analysis– amount of a certain selected constituent in a sample is determined. Ex. Aspirin table - % salicylic acid CLASSIFICATION OF ANALYSIS 2. Based on the Size of Sample Available for Analysis CLASSIFICATION OF ANALYSIS 3. Based on Amount of Analyte in the Sample CLASSIFICATION OF ANALYSIS 4. Based on the Method of Analysis a. Classical - Gravimetric – mass - involves determining the amount of a substance by measuring its mass. This method typically involves forming a precipitate with the analyte, which is then filtered, dried, and weighed. Example: Monitoring Lead Levels in Drinking Water CLASSIFICATION OF ANALYSIS 4. Based on the Method of Analysis a. Classical - Volumetric – volume - involves measuring the volume of a reagent required to react completely with the analyte. Example: Acid-base titration to determine the concentration of an acid or base. CLASSIFICATION OF ANALYSIS b. Instrumental - Electroanalytical – current or voltage - measure the current or voltage associated with chemical reactions at electrodes. - Spectroscopic – radiation - involve measuring the interaction between matter and electromagnetic radiation. - Chromatographic – separation - separate, identify, and quantify the components of a mixture based on differences in their distribution between two phases. Laboratory Glassware Identify the name of the following laboratory glassware. Group Activity #1: How is analytical chemistry applied in your field? Thank you!