Law of Reciprocal Proportions: statement, example and conclusion.

Here is an example to tell how you will solve notes on the four chemical laws in Chapter 1.

Write a note on the Law of reciprocal proportions.

LAW OF RECIPROCAL PROPORTIONS:

This law was proposed by Ritcher in the year 1799. This law is also known as the “law of equivalent weights”.

STATEMENT:

“The weights of the elements which separately combine with the fixed weight of the third element are either the same or are the simple multiples of which they combine with each other.”

EXAMPLE:

Hydrogen combines with Oxygen to form water: H2O

2:16

1:8

Hydrogen combines with Carbon to form Methane: CH4

12:4

3:1

When carbon and oxygen combine with each other they for Carbon-di-oxide: CO2

12:16×2

12:32

3:8

CONCLUSION:

In both cases the mass ratio is the same 1.e 3:8. It proves the law of reciprocal proportion.