Advertisements
Advertisements
Question
How is a mixture of common salt, oil and water separated? You can use a combination of different methods.
Advertisements
Solution
The mixture of common salt, oil and water are taken in a beaker. The salt dissolves in water. Allow it to stand for a few minutes. The mixture of two immiscible liquids is separated by a separating funnel. The oil floats on top. The water can carefully be separated by opening the stopcock in the separating funnel. The oil is left behind in the separating funnel.
The salt water is heated slowly, in a distillation flask with a water condenser. The pure water vapour passes through the inner tube of the condenser.
The vapours on cooling condense into pure water and are collected in a receiver. The salt is left behind in the flask as a residue.
APPEARS IN
RELATED QUESTIONS
What are the characteristic properties of a pure substance? Why do we need them?
A mixture of sulphur and carbon disulphide is :
Name the components present in the following mixture:
Brass
State the principle involved in separation of solid-solid mixtures by Sublimation
Give a reason why sublimable and non-sublimable substances can be separated easily, but two sublimable substance cannot.
Four atoms of hydrogen combine with one atom of carbon to give methane [CH4]. State the valency of carbon.
Complete the given analogy.
Iron – sulphur mixture : ______:: Mustard seeds from Urad-dhal: Rolling
A few drops of ‘Dettol’ when added to water the mixture turns turbid. Why?
A mixture of two or more miscible liquids, for which the difference in the boiling points is less than 25 K can be separated by the process called ______.
Expand LPG ______.
