Chemistry

The key is recognizing that the oxalate compound's formula contains replaceable hydrogens, and you can determine how many through two independent titrations that probe different chemical properties. The NaOH titration reveals total acidity (all replaceable H atoms), while the permanganate titration exploits the reducing power of the oxalate ion itself—these two pieces of information, combined with the given mass concentration, uniquely constrain the formula. Work through the equivalents from each reaction to find the molar mass, then use that to deduce $x$, $y$, and $z$ from the stoichiometry.

The key is recognizing that the oxalate compound's formula contains replaceable hydrogens, and you can determine how many through two independent titrations that probe different chemical properties. The NaOH titration reveals total acidity (all replaceable H atoms), while the permanganate titration exploits the reducing power of the oxalate ion itself—these two pieces of information, combined with the given mass concentration, uniquely constrain the formula. Work through the equivalents from each reaction to find the molar mass, then use that to deduce $x$, $y$, and $z$ from the stoichiometry.