1. Gravimetric Analysis
SMK Negeri 13 Bandung

2. 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
explain the condition of gravimetric analysis
distinguish the separation process in gravimetric
analysis
explain the condition of precipitate in gravimetric
analysis
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3. Preface What is gravimetric analysis? What is analysis?
What is Chemical analysis?
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4. 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
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5. Steps of Quantitative Analysis
2. Transform the target element to a measurable form
Sampling
Steps of Quantitative
Analysis
3. Measurement
4. Calculation
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6. Measurement in quantitative
analysis
By Volume
By Weight
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7. Quantitative analysis by weight with the steps :
Gravimetric Analysis
Quantitative analysis by weight with the steps :
.Isolating
Weighing
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8. 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.
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9. Advantages a. accurate and precise b. sources of error are
readily checked
c. absolute method (direct
measurement)
d. inexpensive apparatus
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10. 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
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11. The separation process
a. Precipitation methods
b. Volatilization or evolution
methods
c. Electro analytical
d. Extraction and
chromatographic methods.
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12. 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
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13. Volatilization Heating method - Lost on ignition
- Humidity/volatile matter
- Ash
- TS/TDS
2. Chemical method
- CO2 liberating from carbonate
compound
CO3= + H+  CO2 + H2O
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