Answer :
Final answer:
The concentration of the final KMnO4 solution is calculated by finding the total moles of KMnO4 in both the original solutions and dividing it by the combined volume, resulting in a concentration of 1.27 M.
Explanation:
To find the concentration of the final KMnO4 solution, we follow these steps:
- Calculate the number of moles of KMnO4 in the 37.2 mL of 1.69 M KMnO4 solution: Moles = Molarity × Volume (L) = 1.69 mol/L × 0.0372 L.
- Calculate the number of moles of KMnO4 in the 16.10 mL of 0.891 M KMnO4 solution: Moles = Molarity × Volume (L) = 0.891 mol/L × 0.0161 L.
- Add the moles from both solutions to get total moles of KMnO4.
- Combine the volumes of both solutions to get the total volume: Total volume = 37.2 mL + 16.10 mL = 53.3 mL = 0.0533 L.
- Calculate the final concentration: Final Molarity = Total Moles / Total Volume (L).
After calculation, the final concentration is determined to be option (b) 1.27 M.