Common salt obtained from lake contains 60 9% of chlorine whereas 6 4 g of the sample from sea water - Science - Atoms and Molecules

Question

Common salt obtained from lake contains 60 9% of chlorine whereas 6
4 g of the sample from sea water contained 3 9 g of chlorine Show
that law of constant proportion is obeyed

Geetha · Accepted Answer

Law of constant proportion means whatever be the method of preparation of a compoundthe compoisition remains the same
I methodWeight of NaCl = 100 gWeight of chlorine   = 60
9 g% of Chlorine = 60
9100 × 100 = 60
9 %II methodWeight of the sample = 6
4 gWeight of Chlorine = 3
9 g% of Chlorine = 3 96
4 × 100 = 60
9 %For the law of constant proportion, the % obtained should be same in both the methods

Common salt obtained from lake contains 60.9% of chlorine whereas 6.4 g of the sample from sea water contained 3.9 g of chlorine. Show that law of constant proportion is obeyed.