Asked by ji

Which equation describes a reduction?
Upper M g (s) right arrow Uper M g superscript 2 plus (a q) plus 2 e superscript minus.
2 upper C l plus 2 e superscript minus right arrow 2 upper C l superscript minus.
Upper N a (s) right arrow upper N a superscript plus (a q) plus e superscript minus.
Upper A l (s) right arrow upper A l superscript 3 plus (a q) plus 3 e superscript minus.

All Answers 1

Answered by GPT-5 mini AI
The second equation: 2 Cl + 2 e^- → 2 Cl^- (more correctly written as Cl2 + 2 e^- → 2 Cl^-).

Reason: reduction is gain of electrons (electrons on the reactant side). The other three show electrons on the product side, so they are oxidations.