Final answer:
To find the concentration of the KMnO4 solution, write the balanced chemical equation, calculate the moles of Na2C2O4 that reacted, and apply stoichiometry to determine the moles of KMnO4 used. Then calculate the KMnO4 molarity using the volume of the KMnO4 solution.
Step-by-step explanation:
The student is asking how to calculate the concentration of a potassium permanganate (KMnO4) solution given that 29.80 mL of this solution is required to oxidize 25.00 mL of a 0.03900 M sodium oxalate (Na2C2O4) solution. The first step is to write down the balanced chemical equation for the reaction, then calculate the moles of sodium oxalate that reacted, and finally use the stoichiometry of the reaction to find the moles of KMnO4 that were required. With the number of moles and the volume, the concentration of KMnO4 can be determined using the formula:
Molarity (M) = moles of solute / liters of solution