Answer to Question #132125 in General Chemistry for Van Sung

Question

Iron forms two compounds with chlorine, compound X and compound Y. When 3.00 g of compound X was analyzed it was found that 1.68 g of CI combined with 1.72 g of Fe. When 5.00 g of compound Y was analyzed it was found 3.28 g CI combined with 1.72 g of Fe. How many g of CI would combine with 1.00 g of Fe? Do for both X and Y using law of multiple proportion

Answer 1

Compound X

1.68 Cl combines with 1.72 Fe

a Cl combines with 1.00 Fe

a = 1.68/1.72 = 0.977 (g) of Cl

Compound Y

3.28 Cl combines with 1.72 Fe

b Cl combines with 1.00 Fe

b = 3.28/1.72 = 1.91 (g) of Cl

a : b = 1 : 2