Gravimetric Analysis SMK Negeri 13 Bandung

After this session, the students are expected Objectives…. After this session, the students are expected to be able : explain the definition of analysis, chemical analysis and gravimetric analysis 2. explain the steps of quantitative analysis 3. explain the advantages of gravimetric analysis 4. explain the condition of gravimetric analysis 5. distinguish the separation process in gravimetric analysis 6. explain the condition of precipitate in gravimetric analysis Teknologi dan Rekayasa

Preface What is gravimetric analysis? What is analysis? What is Chemical analysis? Teknologi dan Rekayasa Teknologi dan Rekayasa

Chemical Analysis Teknologi dan Rekayasa Teknologi dan Rekayasa The determination of its element may contain Composition are: Qualitative  what Quantitative  how many Jobs to determinate the chemical composition of matter. Resolution of a chemical compound into its proximate or ultimate parts Teknologi dan Rekayasa Teknologi dan Rekayasa

Steps of Quantitative Analysis 2. Transform the target element to a measurable form Sampling Steps of Quantitative Analysis 3. Measurement 4. Calculation Teknologi dan Rekayasa

Measurement in quantitative analysis By Volume By Weight Teknologi dan Rekayasa

Quantitative analysis by weight with the steps : Gravimetric Analysis Quantitative analysis by weight with the steps : .Isolating Weighing Teknologi dan Rekayasa

Condition: The separation is complete no ion remind or less than 0,1 gram 2. The element or compound of the element separated is pure 3. The element or compound is in the definite form. Teknologi dan Rekayasa

Advantages a. accurate and precise b. sources of error are readily checked c. absolute method (direct measurement) d. inexpensive apparatus Teknologi dan Rekayasa

general applications standard to be used for the testing and/or calibration of instrumental techniques; (b) high accuracy, although the time-consuming limits this application Teknologi dan Rekayasa

The separation process a. Precipitation methods b. Volatilization or evolution methods c. Electro analytical d. Extraction and chromatographic methods. Teknologi dan Rekayasa

The precipitate must be 1. insoluble 2. readily separated from the solution by filtration, and can be washed free of soluble impurities. 3. convertible into a pure substance of definite chemical composition Teknologi dan Rekayasa

Volatilization Heating method - Lost on ignition - Humidity/volatile matter - Ash - TS/TDS 2. Chemical method - CO2 liberating from carbonate compound CO3= + H+  CO2 + H2O Teknologi dan Rekayasa