A 25.0cm3 sample of a 0.1moldm-3 solution of V3+ ions was placed in a conical flask and excess dilute sulfuric acid added. Potassium manganate (VII) of concentration 0.0500moldm-3 was added from a burette until a faint pink colour was seen. The titre was 20.0cm3.
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Specification: Edexcel Chemistry (9CH0), A-level, Topic 15B: Reactions of transition metal elements. Topic: Transition Metals.
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