Is the reaction of #"lead sulfide"# with #"dioxygen gas"# to give #"lead oxide"#, and #"sulfur dioxide"#, a redox reaction?
This is clearly a redox reaction:
Dioxygen gas is reduced to oxide anion; sulfide anion is oxidized to sulfur dioxide.
Sulfide anion is oxidized to sulfur dioxide; dioxygen gas is reduced to oxide anion. This is formally a 6 electron transfer. Is this balanced? How could I remove the non-integral coefficient?