7 One litre of a mixture containing BaF2 and H SO4 was taken for analysis 25 mL of this mixture was treated with 20 0 mL of 0 1N

Question

7 One litre of a mixture containing BaF2 and H SO4 was taken for analysis 25 mL of this mixture was treated with 20 0 mL of 0 1N KOH for complete neutralisation Another 25 mL of the mixture was added to 100 mL of 0 05 N K CO3 solution and precipitate was filtered off The filtrate required 12 mL of 0 025 M oxalic acid solution using phenolphthalein as indicator Find the strength of BaF and HSO in mixtura

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