Synthesis of Terbium sulfate

Heat 3 mL of water and 10 mL of conc. sulfuric acid to 60°C, then add 4 g of terbium and mechanically stir few times. When all of the terbium has reacted, cool down and place the solution into a freezer for 5h to crystallize out the terbium sulfate. Filter and recrystallize in hot water.

2 Tb + 3 H2SO4 = Tb2(SO4)3 + 3 H2

The reaction taking place

Filtration

The product

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