1)Define : Law of conservation of mass, Heterogeneous mixture 2)Draw the labelled diagrams of the methods used to separate the - Science - Is Matter Around Us Pure

Question

1)Define : Law of conservation of mass,
Heterogeneous mixture
2)Draw the labelled diagrams of the methods used to separate the
following mixtures :
(a) Ammonium chloride and Sodium chloride
(b) Oil and water
(c) Drugs from blood
(d) Dyes from ink
(e) Acetone and Water
(f) Petrol and Diesel
3)Differentiate Solution, Colloid and Suspension based on
(a) stability (b) Brownian movement
(c) size of solute particles
4)During the separation of gases from air, which gas comes at the
last and why?
5)What is the use of fractionating column during the separation of
miscible liquids?

Deepika Sharma · Accepted Answer

Dear Student

1 The law of conservation of mass states that the mass of a closed
system will remain constant in a chemical reaction In other words,
mass can neither be created nor destroyed in a chemical reaction
This law was first formulated by Antoine Laurent Lavoisier in
1789
For example: When 100g of mercuric oxide is heated, 92 6 g of
mercury and 7 4 g of oxygen are obtained as products
i e 2HgO→ 2Hg + O2
In this case mass of reactant =100g
Mass of products = Mass of Hg + Mass of O2= 92 6 + 7 4 =
100g
Thus, we obtain Mass of product = Mass of reactants
This verifies the law of conservation of mass
This law is a universal to which no exception has been
observed

A heterogeneous mixture is a mixture which does
not have a uniform composition throughout, that is its constituents
are not uniformly distributed and are physically distinct For
example, a mixture of sand in water, chalk powder in water etc

Please post other questions in separate threads to have rapid
assistance from our experts

Regards