very simple:
empty weight of evaporating dish : x g
weight of evaporating dish plus sample: y g
wt of evaporating dish after heating and drying: z g
Residue on evaporation: z g - x g
--------------------------- x 100
y g - x g
= ab %
hope this helps
by
Asif
Senior chemist
UK
The residue left after evaporation is called the concentrate or precipitate, depending on the type of substance being evaporated. It is the remaining solid or liquid material that remains after the solvent has been removed through evaporation.
The formula for the solid residue remaining after evaporation depends on the substance that was evaporated. In general, it can be represented as the original substance's chemical formula followed by the word "residue" to indicate that it is the remaining solid after evaporation.
Residue refers to the material remaining after an evaporation.
The residue from the experiment after the evaporation was salt.It took a long time to clean up the residue of flour from the kitchen floor.
After evaporation a sold crystalline residue remain.
Yes. The residue left is material that did not ignite or products of the ignition reaction.The residue remaining after evaporation is the non-volatile substances in the solutionsubjected to the evaporation.
A residue may be a material which remain after calcining, evaporation, final distillation, refining, etc.
By water evaporation salt remain as a residue.
The drying of soil due to surface residue.
After the evaporation of sea water sodium chloride remain as a solid residue.
Salt remain as residue after evaporation.
The solid product formed after evaporation is called a residue.