CSEC Chemistry · January 2017 · Paper 1 · Question Q22
A solution of iron(II) sulfate was added until in EXCESS to a solution of barium nitrate. The precipitate produced was filtered off and water was added to the residue in the filter paper. Water was added to the residue to
- (A)dissolve the precipitate
- (B)prevent further reaction
- (C)purify the precipitate
- (D)dilute the filtrate
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