Test Index

CBSE Class 12 Chemistry 2018 Solved Paper

© examsnet.com
Question : 10 of 26
Marks: +1, -0
Complete and balance the following chemical equations:
(a) Fe2++MnO4−+H+→\mathrm{Fe}^{2+} + \mathrm{MnO}_4^{-} + \mathrm{H}^{+} \rightarrow
(b) MnO4−+H2O+I−→\mathrm{MnO}_4^{-} + \mathrm{H}_2\mathrm{O} + \mathrm{I}^{-} \rightarrow
Solution:  
(a) 5 Fe2++MnO4−+8 H+→5\,\mathrm{Fe}^{2+} + \mathrm{MnO}_4^{-} + 8\,\mathrm{H}^{+} \rightarrow Mn2++4 H2O+5 Fe3+\mathrm{Mn}^{2+} + 4\,\mathrm{H}_2\mathrm{O} + 5\,\mathrm{Fe}^{3+}
(b) 2 MnO4−+H2O+I−→2\,\mathrm{MnO}_4^{-} + \mathrm{H}_2\mathrm{O} + \mathrm{I}^{-} \rightarrow 2 MnO2+2 OH−+IO3−2\,\mathrm{MnO}_2 + 2\,\mathrm{OH}^{-} + \mathrm{IO}_3^{-}
© examsnet.com
Go to Question:
Prev Question
Next Question