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Grade: 12

                        

A mixture of FeO and Fe2O3 is reacted with acidified KMnO4 solution (0.22M and 100ml was used), the solution then was treated with zinc dust which converted all the Fe+3 to Fe+2 ion this Fe+2 require 1000ml of 0.13M K2Cr2O7 solution. Find the mass % of Feo and Fe2O3.

2 years ago

Answers : (1)

Avni Chauhan
askIITians Faculty
247 Points
							572-1692_Capture 8th.PNGmass % of FeO = (moles of FeO * mass of FeO) / ((moles of FeO * mass of FeO) + (moles of Fe2O3 * molarmass ))
= 6.92%
2 years ago
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