Neco Model Questions Vol1 2025 Chemistry Question 35
Practice objective / multiple choice question 35 from the 2025 Neco Model Questions Vol1 Chemistry examination.
A 25.0 mL sample of an unknown Fe²⁺ solution is mixed with 20.0 mL of 0.0500 M KMnO₄ solution in acidic medium. After the reaction, 10.0 mL of the mixture is taken and titrated with 0.0200 M Na₂S₂O₃ solution, requiring 12.5 mL of thiosulfate to reduce the excess permanganate to Mn²⁺. Calculate the concentration (M) of Fe²⁺ in the original sample (to three significant figures).
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About This Question
This is Neco Model Questions Vol1 2025 Chemistry Question 35. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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