Waec Model Questions Vol1 2021 Chemistry Question 42
Practice objective / multiple choice question 42 from the 2021 Waec Model Questions Vol1 Chemistry examination.
A solution of Fe²⁺ ions is titrated with 0.100 M KMnO₄ solution in acidic medium. The reaction is MnO₄⁻ + 5 Fe²⁺ + 8 H⁺ → Mn²⁺ + 5 Fe³⁺ + 4 H₂O. In the first titration, 25.0 mL of the Fe²⁺ solution requires 18.0 mL of KMnO₄. In a second experiment, an unknown volume x mL of the same Fe²⁺ solution is taken, diluted to 100.0 mL, and titrated, requiring 12.5 mL of KMnO₄. Determine the concentration (M) of the original Fe²⁺ solution.
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About This Question
This is Waec Model Questions Vol1 2021 Chemistry Question 42. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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