Question

Several compounds containing only sulfur (S) and fluorine (F) are known. Three
of them have the following compositions:

i. 1.188 g of F for every 1.000 g of S
ii. 2.375 g of F for every 1.000 g of S
iii. 3.563 g of F for every 1.000 g of S

How do these data illustrate the law of multiple proportions?

Answer 1

Notice that F changes each time by a multiple of the lowest F mass (1.188). doesn't that suggest F is increasing by a definite proportion?

Answer 2

Law of multiple proportions, statement that when two elements combine with each other to form more than one compound, the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

The fixed weight is the 1.000 g S.
Divide 1.188, 2.375, and 3.563 by 1.188 and see if you don't get small whole numbers. They should be in the ratio of 1:2:3.

Answer 3

.1403