Question

Kindly explain :-

Law of reciprocal propotion with defination and with example?


✏✏✏✏No sparm ANS ✏✏✏

Answer 1

Answer:

If two different elements combine separately with a fixed mass of a third element, the ratio of the masses in which they do so are either the same as or a simple multiple of the ratio of the masses in which they combine with each other.

Take example of PCl3 and PH3

both have common elements P, this H and Cl will combine in the ratio of 3:3 or 1:1 and we see that HCl exists..

Answer 2

$\large{\underline{\boxed{ Answer}}}$

Actually,welcome to the Topic Law of Chemical Combination

$\sf{\underline{Law of Reciprocal proportions}}$

→Given by Richter in 1792.

According to this law,

when two elements combine separately with a fixed mass of a third element,the ratio in which they do will so,bears simple or multiple ratio.

Take an example:-

Consider three elements sulphur,oxygen and hydrogen .

Both sulphur and oxygen combine separately to form H2S and water H2O.

They also combine to form SO2.

The ratio of the weight of sulphur and oxygen which combine separately with H.

32:16 or 1 : 2

now,ratio of sulphur and oxygen in SO2.

32 : 32 or, 1: 1

The two ratios bears a simple multiple of each other.

$\frac{2}{1} </strong><strong>:</strong><strong>\frac{1}{1} = \frac{2}{1}$

or 2 : 1 which is a simple ratio.