A given amount of Fe2+ is oxidised by x moles of MnO−4 in acidic medium. Calculate number of moles of Cr2O2−7 required to oxidise same amount in Fe2+ in acidic medium if x=5.
A
6
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
5.4
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
7
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
None of these
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A 6 The balanced reactions are as follows: 6Fe2++Cr2O2−7H+−−→2Cr3++H2O+6Fe3+ 5Fe2++MnO−4H+−−→Mn2++H2O+5Fe3+ MoleofMnO−4MoleofCr2O2−7=56(ratioofFe2+oxidised) ⇒MoleofCr2O2−7=1.2x