How many moles of electrons are needed for the reduction of `20mL` of `0.5M` solution of `KMnO_(4)` in acid medium

Explanation

To determine how many moles of electrons are needed for the reduction of 20 mL of 0.5 M solution of KMnO4 in acidic medium, we can follow these steps:

### Step 1: Calculate the number of moles of KMnO4
We know that molarity (M) is defined as:
\[ \text{Molarity (M)} = \frac{\text{moles of solute}}{\text{volume of solution in liters}} \]

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