Posted by Atul on Tuesday, July 12, 2011 at 12:34pm.
Iron forms two chlorides.One gram of the first chloride produces 2.26g of silver chloride and one gram of the second chloride produces 2.65g of silver chloride.Prove that these data illustrate the law of multiple proportions
Please provide detailed answer
Science (Chemistry) - bobpursley, Tuesday, July 12, 2011 at 1:05pm
well, if it is the law of multiple proportions, the increase chlorine in one of the chlorides is a whole number ratio.
You know AgCl is the formula for silver chloride, and chlorine represents a percent of the mass (35.4/(35.2+107.8)=24.7 percent
so the chlorine in each sample is
a) 2.26*.247=.558 grams Cl
b) 2.65*.247=.655 grams Cl
Now each of the chlorides had a total mass of 1 gram, so the iron in each one
and (1-.655)=.345 grams.
now we look at mole ratios
moles iron: .442/55.8
ratio of chloride to iron moles:
ratio moles firstsample: .558*55.8/.442*35.4=2
ratio moles second sample:
That sure looks like whole number ratios to me.
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