What is the Difference Between Gravimetric and Titrimetric Analysis?

The main difference between gravimetric and titrimetric analysis lies in the methods they use to determine the concentration of a substance in a sample. Here are the key differences between the two techniques:

• Gravimetric Analysis: This technique involves determining the amount of a substance by measuring its mass. A sample is subjected to some treatment that causes a change in the physical state of the analyte, such as precipitation reactions. The mass of the sample, the isolated analyte, or some other component of the analysis system is used along with the known stoichiometry of the compounds involved to calculate the analyte concentration. Gravimetric methods were the first techniques used for quantitative chemical analysis and remain important tools in the modern chemistry laboratory.
• Titrimetric Analysis: Also known as volumetric analysis, titrimetric analysis involves determining the amount of a substance by measuring its volume. This technique involves the determination of the volume of a solution of accurately known concentration required to react quantitatively with the measured volume of the solution of a substance, the concentration of which is to be determined. The solution of accurately known concentration is called a standard solution. Titrimetric analysis is commonly used for various types of reactions, such as neutralization reactions involving titrations of acids and bases.

In summary, gravimetric analysis measures the quantity of an analyte using mass, while titrimetric analysis measures the quantity of an analyte using volume.

Comparative Table: Gravimetric vs Titrimetric Analysis

The main difference between gravimetric and titrimetric analysis lies in the methods they use to determine the concentration of a substance in a sample. Here is a table comparing the two methods:

In gravimetric analysis, the quantity of an analyte is determined using weight, and the process involves precipitation reactions that lead to the separation of the desired compound from a given sample. On the other hand, in titrimetric analysis, the quantity of an analyte is determined using volume, and it requires the precision addition of a reagent with a known volume. Additionally, titrimetric analysis depends on the stoichiometry of the compounds involved and the end points of the reaction.