25.0cm³ of a mixture of Fe²⁺ and Fe³⁺ ions in an aqueous salt was acidified with sulphuric(VI)acid then titrated against potassium manganate(VI).The salt required 15cm³...

      

25.0cm³ of a mixture of Fe²⁺ and Fe³⁺ ions in an aqueous salt was acidified with sulphuric(VI)acid then titrated against potassium manganate(VI).The salt required 15cm³ of 0.02M potassium manganate(VI) for complete reaction.
A second 25cm³ portion of the Fe²⁺ and Fe³⁺ ion salt was reduced by Zinc then titrated against the same concentration of potassium manganate(VI).19.0cm³ of potassium manganate(VI)solution was used for complete reaction. Calculate the concentration of Fe²⁺ and Fe³⁺ ion in the solution on moles per litre.

  

Answers

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Wilfykil answered the question on February 18, 2019 at 06:13

Next: 46.0g of a metal carbonate MCO3 was dissolved 160cm³ of 0.1M excess hydrochloric acid and the resultant solution diluted to one litre.25.0cm³ of this solution...
Previous: 9.7 g of a mixture of Potassium hydroxide and Potassium chloride was dissolved to make one litre solution.20.0cm³ of this solution required 25.0cm³ of 0.12M...

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