ferric sulphate is used in water and sewage treatment and in removal of suspended impurities. is empirical formula is Fe2(So4)3 calculate the mass percent of iron.
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Answered by
7
Answer:
Mol. wt. of Fe
2
(SO
4
)
3
=2× at. wt. of Fe+3× at. wt. of S+12× at. wt. of oxygen
=2×56+3×32+12×16=112+96+192=400
∴ % of Fe=
400
112
×100=28%
∴ % of S=
400
96
×100=24%
∴ % of O=
400
192
×100=48%
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