Three elements X, Y and Z form three different compounds XY, YZ, and XZ. If XY contains 75% X, XZ contains 72.76% Z and YZ contains 11.11% Y, then show that these results illustrate the law of reciprocal proportion.

Explanation

In XY compound mass of X: mass of `Y=75:25=3:1`
In XZ compound, mass of X: mass of `Z=27:24:72.76=3:8`
`therefore`If the elements Y and Z combine together, the ratio of their masses in the compound YZ will be 1:8 or any simple multiple of it. but in the compound YZ, mass of Y: mass of Z=11.11:88.89=1:8.
`therefore` These results illustrate the law of reciprocal proportion.