Teknologi dan RekayasaAfter this session, the students are
expected to be able :Objectives.explain the definition of analysis,
chemical analysis and gravimetric analysis4. explain the condition
of gravimetric analysis2.explain the steps of quantitative
analysis3.explain the advantages of gravimetric analysis5.
distinguish the separation process in gravimetric analysis6.
explain the condition of precipitate in gravimetric analysis
Teknologi dan Rekayasa
Teknologi dan RekayasaTeknologi dan Rekayasa
What is gravimetric analysis? What is analysis? What is Chemical
analysis?
Teknologi dan Rekayasa
Teknologi dan RekayasaTeknologi dan RekayasaChemical
Analysis
Teknologi dan Rekayasa
Teknologi dan RekayasaSampling
2. Transform the target element to a measurable form
3. Measurement
Teknologi dan Rekayasa
Teknologi dan RekayasaBy VolumeBy Weight
Teknologi dan Rekayasa
Teknologi dan Rekayasa.IsolatingWeighing
Teknologi dan Rekayasa
Teknologi dan RekayasaThe separation is complete no ion remind
or less than 0,1 gram2. The element or compound of the element
separated is pure3. The element or compound is in the definite
form.
Teknologi dan Rekayasa
Teknologi dan Rekayasaa. accurate and preciseb. sources of error
are readily checkedc. absolute method (direct measurement) d.
inexpensive apparatus
Teknologi dan Rekayasa
Teknologi dan Rekayasastandard 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
Teknologi dan Rekayasaa. Precipitation methodsb. Volatilization
or evolution methodsc. Electro analytical methodsd. Extraction and
chromatographic methods. The separation process
Teknologi dan Rekayasa
Teknologi dan Rekayasa
The precipitate must be
1. insoluble2. 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
Teknologi dan RekayasaVolatilizationHeating method - Lost on
ignition - Humidity/volatile matter - Ash - TS/TDS2. Chemical
method - CO2 liberating from carbonate compound CO3= + H+ CO2 +
H2O
