Question

Fe(SO4)3+....=Fe(OH)3+....

Answer 1

Fe(SO4)3+H2O=Fe(OH)3+ H2SO4

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Answer 2

Fe2(SO4)3 + 3Ba(OH)2 → 2Fe(OH)3↓ + 3BaSO4↓

Ионная реакция : 
2Fe3+ + 3SO42− + 3Ba2+ + 2OH− → 2Fe(OH)3 + 3BaSO4