of acidified iron(II) solution needs of potassium manganate(VII) to reach the end point. The ionic equation uses . What is the concentration of the iron(II) solution?
Answer and explanation
Correct answer: D.
- Step 1: Moles mol.
- Step 2: Moles mol.
- Step 3: Concentration .
Answer
.
Why not the others: : forgets to multiply by for the mole ratio. : multiplies by but inverts the volume ratio. : reports the moles of iron(II) as if they were the concentration.
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