Question

Explain in best way possible


Ty!!!

Answer 1

Law of Reciprocal Proportion :

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

Here,
First element : Sulphur
Second element : Oxygen
Third element with same mass : H of 1g (say)

First element combine with H to form H2S
Second element combine with H to form H2O
Both first and third combine with each other to form SO2.

Now, For Calculation see pic.