Back to Course
Module 5: Equilibrium and Acid Reactions5.1 Static and Dynamic Equilibrium5 Topics
5.2 Factors that Affect Equilibrium2 Topics
5.3 Calculating the Equilibrium Constant2 Topics
5.4 Solution Equilibria
Module 6: Acid/Base Reactions6.1 Properties of Acids and Bases7 Topics
6.2 Using Brønsted–Lowry Theory2 Topics
6.3 Quantitative Analysis1 Topic
Module 7: Organic Chemistry7.1 Nomenclature2 Topics
7.2 Hydrocarbons2 Topics
7.3 Products of Reactions Involving Hydrocarbons
7.4 Alcohols1 Topic
7.5 Reactions of Organic Acids and Bases
7.6 Polymers2 Topics
Module 8: Applying Chemical Ideas8.1 Analysis of Inorganic Substances3 Topics
8.2 Analysis of Organic Substances
8.3 Chemical Synthesis and Design
Working ScientificallyWorking Scientifically Overview1 Topic
- EduKits Education
Lesson 14, Topic 3
Gravimetric analysis is a quantitative technique in which the amount of analyte, a substance that is to be analysed, is determined through the measurement of mass.
- Obtain analyte from environment/solution
- Evaporation (for a single analyte)
- Preserve all analyte, ensure purity
- Weigh analyte (or its compound)
- Calculate for required value
- Dissolution – A known quantity of the sample with the analyte (i.e. unknown ion) is dissolved in water.
- Precipitation reaction – The analyte is precipitated from the solution using a suitable reagent in excess.
- Filtration of precipitate – The precipitate is collected by filtration then washed, dried and weighed.
- Precipitation reaction calculation – The amount of analyte in the sample is calculated from the amount of precipitate.