In the titration of a mixture of and with : — Redox Reactions and Volumetric Analysis Chemistry Question

💡 Solution & Explanation

**Logic:** Ph changes color at pH ~8.3, where $NaOH \rightarrow NaCl$ and $Na_2CO_3 \rightarrow NaHCO_3$ (half neutralization). MeOH changes color at pH ~3.7, where the formed $NaHCO_3$ is fully neutralized to $CO_2$. Therefore, MeOH accounts for the total volume from the start. [2, 3]