A solution containing impure reacts completely with of in acid solution. The purity of (in ) is . (Mol. Wt of )

Question

A  solution containing  impure  reacts completely with  of  in acid solution. The purity of  (in ) is . (Mol. Wt of )

Canvas Classes · Accepted Answer

Strategy:
 In this redox titration, calculate the moles of  and use the stoichiometric equivalents ratio ( in acid) to find the pure mass of . Purity is then the percentage of this mass in the original sample.

Step 1: Calculate moles of } \ce{KMnO4}
Molar mass .

Step 2: Calculate mass of pure } \ce{H2O2}
Ratio is .
Moles .
Mass .

Step 3: Calculate percentage purity

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