HCl contains 97.26% chlorine, phosphine contains 91.1% phosphorus, Applying the suitable law of chemical combination . Calculate how much quantity of phosphorus will combine with 10.65g of chlorine =97.26parts.

Explanation

In HCl, chlorine =97.26parts
and hydrogen =2.74parts
So, 2.74 parts of hydrogen combine with chlorine =97.26 parts
1 part of hydrogen combines with chlorine.
`=(97.26)/(2.74)` parts `=35.5` parts
In phosphorus phosphorus =91.1 parts and hydrogen
=8.9 parts
1 part of hydrogen combines with phosphorus
`=(91.1)/(8.9)=10.24` parts
According to law of reciprocal proportions, when phosphorus and chlorine will react, they should combine in the ratio of `19.24:35.5` by mass.
So, 35.5 g of chlorine combine with phosphorus=10.24g ltbr. 10.65g of chlorine will combine with phosphorus
`=(10.24)/(35.5)xx10.65g=3.072g`