JEE Main
- Exam
- JEE Main
- Subject
- Chemistry
- Chapter
- Redox Reactions
JEE Main · Chemistry · Redox Reactions
Balance the following equations in basic medium by ion - electron...
Balance the following equations in basic medium by ion - electron method and oxidation number methods
~ stoichiometric coefficients for Cl2O7(g), H2O2(aq), and O2(g) may be
~ stoichiometric coefficients for Cl2O7(g), H2O2(aq), and O2(g) may be
Options
- A1, 4, 2, 4
- B1, 3, 2, 3
- C1, 5, 2, 4
- D1, 2, 2, 2
Correct answer
A. 1, 4, 2, 4
Step-by-step solution
\begin{cases}{\overset{+ 7}{Cl}}_{2} {O}_{7} + 8 \text{e} & ⟶ & 2 \overset{+ 3}{Cl} {O}_{2}^{- 1} & \left[\text{RHR}\right] \\ {H}_{2} {O}_{2} + 2 {OH}_{aq}^{- 1} & ⟶ & \text{O} + 2 {H}_{2} \text{O} + 2 e^{-} & \left[\text{OHR}\right] } × 4\end{cases}
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To balance unbalanced oxygen atoms, add 3H2O molecules on LHS and 6 OH- ions on RHS
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To balance unbalanced oxygen atoms, add 3H2O molecules on LHS and 6 OH- ions on RHS