Only $2 \mathrm{~mL}$ of $\mathrm{KMnO}_4$ solution of unknown molarity is required to reach the end point of a titration of $20 \mathrm{~mL}$ of oxalic acid $(2 \mathrm{M})$ in acidic medium. The molarity of $\mathrm{KMnO}_4$ solution should be ________ M.
Answer (integer)
8
Solution
<p>$$\begin{aligned}
& \mathrm{(M) \times(2) \times(5)=2 \times 20 \times 2} \\
& \mathrm{M=8}
\end{aligned}
$$</p>
About this question
Subject: Chemistry · Chapter: Redox Reactions · Topic: Oxidation States
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