A solid mixture weighing 0.548 5 g contained only ferrous ammonium sulfate hexahydrate and ferrous chloride...

 

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A solid mixture weighing 0.548 5 g contained only ferrous ammonium sulfate hexahydrate and ferrous chloride hexahydrate. The sample was dissolved in 1 M H,SO,, oxidized to Fe3+ with H,O2, and precipitated with cupferron. The ferric cupferron complex was ignited to produce 0.167 8 g of ferric oxide, Fe,O, (FM 159.69). Calculate the weight percent of Cl in the original sample. FeSO, (NH4)2SO, 6H,O FeCl, · 6H,O Ferrous ammonium sulfate Ferrous chloride hexahydrate FM 392.13 hexahydrate FM 234.84 NO O NH Cupferron FM 155.16 A solid mixture weighing 0.548 5 g contained only ferrous ammonium sulfate hexahydrate and ferrous chloride hexahydrate. The sample was dissolved in 1 M H,SO,, oxidized to Fe3+ with H,O2, and precipitated with cupferron. The ferric cupferron complex was ignited to produce 0.167 8 g of ferric oxide, Fe,O, (FM 159.69). Calculate the weight percent of Cl in the original sample. FeSO, (NH4)2SO, 6H,O FeCl, · 6H,O Ferrous ammonium sulfate Ferrous chloride hexahydrate FM 392.13 hexahydrate FM 234.84 NO O NH Cupferron FM 155.16