Precipitation (Coursework Sample)

Precipitation
Precipitation
The process of separating solid particles from a previously clear liquid by physical or chemical changes.
Precipitate: The supernatant solid which is collected at the surface is called as precipitate.” OR “When the reaction occurs, the solid formed is called precipitate.
Precipitant: The cause of precipitation is called precipitant.” OR “Any physical or chemical agent that causes precipitation is called as precipitant.
Supernatant: Supernatant is the liquid which remains above the solid (precipitate) formed during the precipitation reaction.
Apparatus
It is described for the measurement of the rates of precipitation reactions. It consists of a T-tube, where reactants are added to the arms of the T, mixed rapidly at the junction, and the rates of disappearance of reactants or appearance of products are measured along the stem of the Tube. It has been used to investigate the kinetics and mechanism of precipitation reactions. It has enabled measurements to be made with relatively high precision and good accuracy of the first 130 ms of reaction time.
Procedure of precipitation
Natural methods of precipitation include settling or sedimentation, where solid forms over a period of time due to ambient forces like gravity or centrifugation.
During chemical reactions, precipitation may also