Which reactions are redox reactions? check all that apply. check all that apply. 4li (s) + o2 (g) →2li2o (s) mg (s) + fe2 + (aq) →mg2 + (aq) + fe (s) pb (no3) 2 (aq) + na2s?

Question

Blaze Cantu

Chemistry

14 May, 02:50

Which reactions are redox reactions? check all that apply. check all that apply. 4li (s) + o2 (g) →2li2o (s) mg (s) + fe2 + (aq) →mg2 + (aq) + fe (s) pb (no3) 2 (aq) + na2s?

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Answers (1)

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Powers · Answer 1

The reaction s that are redox reactions are

4Li (s) + O2 (g) → 2Li2O (s) /

Mg (s) + Fe2 + (aq) → Mg2 + (aq) + Fe (s)

Explanation

A redox reaction involve both oxidation and reduction. During redox reaction there is change in oxidation states. For example in

4Li + O2 →2Li2O Li is oxidized while O is reduced

in Mg + Fe2 + → Mg2 + + Fe Mg is oxidized since it move from oxidation state 0 to 2 + while Fe2 + is reduced since it move from oxidation state of 2 + to 0