Home >
Community >
What is the reaction of potassium permanganate and sodium thiosulphate in an acidic medium?
Upvote
20
Downvote
+ Chemical reactions
+ Potassium
+ Sodium
+ Chemistry
+ Potassium permanganate
Posted by
Mike Jones
What is the reaction of potassium permanganate and sodium thiosulphate in an acidic medium?
MnO4^- + S2O3^2- → ???
This is a redox reaction where the manganese in permanganate ion is reduced to Mn^2+ and sulfur in thiosulfate is oxidized to form the sulfate ion, SO4^-. The oxidation state of Mn goes from +7 to +2, and the oxidation state of each sulfur goes from +2 to +6.
This is a redox reaction where the manganese in permanganate ion is reduced to Mn^2+ and sulfur in thiosulfate is oxidized to form the sulfate ion, SO4^-. The oxidation state of Mn goes from +7 to +2, and the oxidation state of each sulfur goes from +2 to +6.
MnO4^- + S2O3^2- → ???
This is a redox reaction where the manganese in permanganate ion is reduced to Mn^2+ and sulfur in thiosulfate is oxidized to form the sulfate ion, SO4^-. The oxidation state of Mn goes from +7 to +2, and the oxidation state of each sulfur goes from +2 to +6.
8(MnO4^- + 8H+ + 5e- → Mn^2+ + 4H2O)
5(S2O3^2- + 5H2O → 2SO4^2- + 10H+ + 8e-)
————————— —————————— ——————
8MnO4^- + 5S2O3^2- + 64H+ + 25H2O → 8Mn^2+ + 10SO4^2- + 32H2O + 50H+
simplify
8MnO4^- + 5S2O3^2- + 14H+ → 8Mn^2+ + 10SO4^2- + 7H2O
net ionic equation
MnO4^- + S2O3^2- → ???
This is a redox reaction where the manganese in permanganate ion is reduced to Mn^2+ and sulfur in thiosulfate is oxidized to form the sulfate ion, SO4^-. The oxidation state of Mn goes from +7 to +2, and the oxidation state of each sulfur goes from +2 to +6.
8(MnO4^- + 8H+ + 5e- → Mn^2+ + 4H2O)
5(S2O3^2- + 5H2O → 2SO4^2- + 10H+ + 8e-)
————————— —————————— ——————
8MnO4^- + 5S2O3^2- + 64H+ + 25H2O → 8Mn^2+ + 10SO4^2- + 32H2O + 50H+
simplify
8MnO4^- + 5S2O3^2- + 14H+ → 8Mn^2+ + 10SO4^2- + 7H2O
net ionic equation
More
VOTE