Chemistry, 11.11.2020 18:30 GoAheadAndSmileToday
A mixture contains 20% iron ions by mass. What mass of iron chloride (FeCl) would
you need to provide the iron ions in 50 g of the mixture? A of Fe = 56, A of Cl = 35.5.
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Answers: 2
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1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
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A mixture contains 20% iron ions by mass. What mass of iron chloride (FeCl) would
you need to provi...
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