Waec Model Questions Vol1 2019 Chemistry Question 48
Practice objective / multiple choice question 48 from the 2019 Waec Model Questions Vol1 Chemistry examination.
A 0.500 g sample of an iron ore contains Fe²⁺ and Fe³⁺. The ore is dissolved in acid and treated with excess SnCl₂, which reduces all Fe³⁺ to Fe²⁺. The resulting solution is titrated with 0.0250 M KMnO₄, requiring 23.6 mL to reach the endpoint. The original ore contained 0.150 g of Fe₂O₃ (the source of Fe³⁺). Calculate the mass of Fe²⁺ that was originally present in the ore before reduction.
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About This Question
This is Waec Model Questions Vol1 2019 Chemistry Question 48. It is one of the objective questions from the 2019 Waec Model Questions Vol1 Chemistry examination.
Difficulty level: Medium .
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