50 mL of a solution of Na2CO3 and NaHCO3 requires 17.5 mL of 0.1 M H2S – InterviewSolution

1.	50 mL of a solution of Na2CO3 and NaHCO3 requires 17.5 mL of 0.1 M H2SO4 for neutralisation using phenolphthalein as indicator. Methyl orange is then added when further 25 mL of 0.2 M H2SO4 was required. Calculate the weight of Na2CO3 and NaHCO3 respectively in the solution.
Answer» $50 m L$ of a solution of $N a_{2} C O_{3}$ and $N a H C O_{3}$ requires $17.5 m L$ of $0.1 M H_{2} S O_{4}$ for neutralisation using phenolphthalein as indicator. Methyl orange is then added when further $25 m L$ of $0.2 M H_{2} S O_{4}$ was required. Calculate the weight of $N a_{2} C O_{3}$ and $N a H C O_{3}$ respectively in the solution.

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