Solution Found!
Use the half-reaction method to balance each redox reaction occurring in acidic aqueous
Chapter 16, Problem 65P(choose chapter or problem)
Use the half-reaction method to balance each redox reaction occurring in acidic aqueous solution.
(a) \(\mathrm{PbO}_{2}(s)+\mathrm{I}^{-}(a q) \longrightarrow \mathrm{Pb}^{2+}(a q)+\mathrm{I}_{2}(s)\)
(b) \(\mathrm{SO}_{3}^{~2-}(a q)+\mathrm{MnO}_{4}^{-}(a q) \longrightarrow \mathrm{SO}_{4}^{~2-}(a q)+\mathrm{Mn}^{2+}(a q)\)
(c) \(\mathrm{S}_{2} \mathrm{O}_{3}^{~2-}(a q)+\mathrm{Cl}_{2}(g) \longrightarrow \mathrm{SO}_{4}^{~2-}(a q)+\mathrm{Cl}^{-}(a q)\)
Equation Transcription:
Text Transcription:
PbO_2(s)+I-(aq) rightarrow Pb_2+(aq)+I2(s)
SO_3^2-(aq)+MnO_4- rightarrow SO_4^2-(aq)+Mn^2+(aq)
S2O_3^2-(aq)+Cl_2(g) rightarrow SO_4^2-(aq)+Cl^-(aq)
Questions & Answers
QUESTION:
Use the half-reaction method to balance each redox reaction occurring in acidic aqueous solution.
(a) \(\mathrm{PbO}_{2}(s)+\mathrm{I}^{-}(a q) \longrightarrow \mathrm{Pb}^{2+}(a q)+\mathrm{I}_{2}(s)\)
(b) \(\mathrm{SO}_{3}^{~2-}(a q)+\mathrm{MnO}_{4}^{-}(a q) \longrightarrow \mathrm{SO}_{4}^{~2-}(a q)+\mathrm{Mn}^{2+}(a q)\)
(c) \(\mathrm{S}_{2} \mathrm{O}_{3}^{~2-}(a q)+\mathrm{Cl}_{2}(g) \longrightarrow \mathrm{SO}_{4}^{~2-}(a q)+\mathrm{Cl}^{-}(a q)\)
Equation Transcription:
Text Transcription:
PbO_2(s)+I-(aq) rightarrow Pb_2+(aq)+I2(s)
SO_3^2-(aq)+MnO_4- rightarrow SO_4^2-(aq)+Mn^2+(aq)
S2O_3^2-(aq)+Cl_2(g) rightarrow SO_4^2-(aq)+Cl^-(aq)
ANSWER:
Step 1
(a) PbO2(s) + I− (aq) → Pb2+ (aq) + I2(s)
The balanced chemical equation is,
PbO2 +2I- + 4H+ → I2 + Pb2+ + 2H2O