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6.5 g mixture of sample containing KOH, ...

6.5 g mixture of sample containing KOH, NaOH, and `Na_2CO_3` was dissolved in `H_2O` and the volume was made up to 250 mL. 25 " mL of " this solution requires 26.23 " mL of " 0.5 N `H_2SO_4` using methyl orange as indicator, and 19.5 " mL of " same `H_2SO_4` using phenolphathalein as indicator for complete neutralisation. Calculate the percentage of KOH, NaOH, and `Na_2CO_3` in the sample.

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