allery10.0 mL of 0.1 M oxalic acid needs 20.0 mL of acidified KMnO4. What is the KMnO4 molarity?
A0.02 M
B0.05 M
C0.04 M
D0.01 M
Answer & Solution
Correct answer: A. 0.02 M
Using 2 M1V1 = 5 M2V2, M2 = (2 x 0.1 x 10) / (5 x 20) = 0.02 M.
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