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Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: Clifj029 on June 25, 2019, 06:19:22 PM

Title: Difficult redox calculation
Post by: Clifj029 on June 25, 2019, 06:19:22 PM
anyone know how to attempt this and get the answer?
Calculate the masses of anhydrous Iron(II) and Iron(III) sulphate present in 1dm3 Of solution from the following results:
25cm3 of the solution was oxidised by 23.0cm3 of 0.02mol dm-3 KMnO4
After reduction by zinc and dilute sulphuric acid, 25.00cm3 of the solution required 40.0cm3 of the same KMnO4 solution.
(Fe = 55.8, S=32.1, O=16.0)
(Use MnO4^- + 8H+ 5e- -> Mn^2+ 4H2O)
Title: Re: Difficult redox calculation
Post by: billnotgatez on June 25, 2019, 11:00:40 PM
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topic locked here
see high school subforum