Gravimetric Analysis Steps and Definition

What is Gravimetric Analysis?

Gravimetric analysis is a technique used to determine the concentration of an analyte in a sample by measuring the mass of the analyte in the sample. Therefore the concentration of the analyte is determined by comparing the mass of the analyte in the sample to the mass of the analyte in a standard solution.

Principle of Gravimetric analysis

The principle of gravimetric analysis a technique used to determine the concentration of an analyte in a sample. The analyte precipitated from the sample and weighed. The concentration of the analyte is then determined from the weight of the precipitate.

Gravimetric Analysis Method Advantages and Disadvantages

The gravimetric analysis method a technique used to measure the concentration of an analyte in a sample. The method involves dissolving the analyte in a solvent, then precipitating the analyte as a solid. The amount of solid that precipitated then weighed and used to calculate the concentration of the analyte in the sample.

Therefore the gravimetric analysis method has several advantages. First, it is a very accurate method and can used to measure concentrations down to the milligram level. Second, it is a relatively easy method to perform and does not require a lot of equipment.

However, the gravimetric analysis method also has several disadvantages. First, it is a time-consuming method and can take several hours to complete. Second, it is a relatively expensive method and can be expensive to purchase the necessary equipment. Finally, it is a relatively complex method and can be difficult to perform correctly.

Types of Gravimetric Analysis

There are three types of gravimetric analysis:

1. Precipitation gravimetry: Precipitation gravimetry used to determine the amount of a substance in a sample by precipitating it out of solution and weighing the precipitate.
2. Solvent extraction gravimetry: Solvent extraction gravimetry used to determine the amount of a substance in a sample by extracting it from the sample using a solvent and then weighing the extract.
3. Thermal gravimetry: Thermal gravimetry used to determine the amount of a substance in a sample by heating the sample to a high temperature and then measuring the weight of the residue.

The Steps Commonly Followed in the Gravimetric Analysis are

1. Weigh a known mass of the analyte on a balance.
2. Add a small volume of the analyte solution to a graduated cylinder.
3. Record the volume of the analyte solution.
4. Weigh the graduated cylinder and also the analyte solution together.
5. Subtract the weight of the graduated cylinder from the weight of the analyte solution to find the weight of the analyte.

Steps to Perform Gravimetric Analysis

1. Weigh a crucible and record the weight.
2. Weigh the crucible and its contents and record the weight.
3. Remove the crucible from the balance and heat the contents until they melted.
4. Pour the melted contents into a mold and allow them to cool.
5. Weigh the mold and its contents and record the weight.
6. Subtract the weight of the crucible from the weight of the mold and its contents to find the weight of the metal.

Advantages and Disadvantages of the Gravimetric Method

• Advantages of the gravimetric method include that it is very accurate and precise.
• It can also used to measure very small amounts of material.
• Disadvantages of the gravimetric method include that it is slow and can be expensive.

The Disadvantage of Gravimetric Method:

• The disadvantage of the gravimetric method is that it is slow and requires a lot of equipment.
• It can also be difficult to get an accurate reading if there is any interference from other substances in the sample.