Gravimetric density refers to the mass of a substance per unit volume. It is typically measured in units such as grams per cubic centimeter or kilograms per liter. Gravimetric density is important in various fields, including chemistry and materials science, for characterizing the compactness or heaviness of a material.
The method of determination of mass as precipitates, from ionic solution after filtration ,washing and weighing the product is termed as
precipitation gravimetry... BY : SHAIKH M WAQAS (CH-302,NEDUET,KARACHI,Pakistan)
The gravimetric factor is related to the percentage of element (or ion) to be determined in the precipitate (as compound).
Digestion in gravimetric analysis refers to the process of heating a sample to break down it into simpler compounds. This step is often necessary to convert the target analyte into a form suitable for precipitation and subsequent weighing. Digestion helps ensure that all analytes are in a consistent chemical form for accurate quantification.
Whatman filter paper no. 40 is recommended for gravimetric quantitative analysis. Some characteristics are: - flow rate: medium - Herzberg filtration speed: approx. 340 - porosity: approx. 8 micrometers - ash: max. 0,oo7 % - thickness: 210 micrometers - weight: 95 g/m2
Many methods exist: - distillation - crystallization - sieving - electromagnetic separation - decanting - gravimetric - radiometric - centrifuging - solvent extraction - ion exchanging -etc.
An insoluble compound was precipitated. This is an important procedure in gravimetric analysis, chemical engineering, foods technology, water treatment, separation of components etc.
Look up 'Gravimetric Surveys' or 'Microgravimmetry'
The gravimetric factor is related to the percentage of element (or ion) to be determined in the precipitate (as compound).
A gravimetric factor converts grams of a compound into grams of a single element. For example, we'll find the gravimetric factor of Cl in AgCl. Use the atomic mass of Ag(107.868) and the atomic mass of Cl(35.453) and add them together to get 143.3. Then divide 35.453 by 143.3 to get .2474. .2474 is the gravimetric factor of Cl in AgCl.
Solubility always has to be considered as a source of error in gravimetric analysis because what remains in solution, no matter how little, doesn't get measured (although, it can sometimes be determined indirectly). So, gravimetric results are always erroneously low due to this factor.
Digestion in gravimetric analysis refers to the process of heating a sample to break down it into simpler compounds. This step is often necessary to convert the target analyte into a form suitable for precipitation and subsequent weighing. Digestion helps ensure that all analytes are in a consistent chemical form for accurate quantification.
Gravimetric analysis measures the mass of a substance to determine its quantity, while other forms of analysis may involve measuring other properties such as volume or concentration. Gravimetric analysis typically provides more accurate results because it directly measures the amount of the target substance, and it is often used for determining the purity of a sample or detecting trace amounts of a substance. The main limitation of gravimetric analysis is that it is time-consuming and may require complex procedures compared to other analytical methods.
Laszlo Erdey has written: 'Gravimetric analysis'
silver nitrate
Precipitation is an important process in gravimetric analysis.
In gravimetric analysis, precipitation reactions involve the formation of a solid, insoluble compound from the reaction of two aqueous solutions. Types of precipitates commonly used include sulfides, hydroxides, carbonates, and phosphates. These precipitates are filtered, washed, dried, and weighed to determine the amount of the analyte present in the original sample.
M. D. Hawkins has written: 'Calculations in volumetric and gravimetric analysis'
Gravimetric induction is a process in which a mass is induced to move within a gravitational field due to the application of external forces or influences. This can occur in various situations, such as a pendulum swinging back and forth due to gravity's pull, or a satellite orbiting a planet under the influence of gravitational forces.