Question 5 of 10 Which chemical equation represents a redox reaction?

A.
Na2CO3 + H2S → H2CO3 + NaS

B.
2Li + MgCl2 → 2LiCl + Mg

C.
AgNO3 + NaCl → AgCl + NaNO3

D.
Ca(OH)2 + H2SO4 → CaSO4 + 2H2O

Chemical equation represents a redox reaction :

2Li + MgCl₂ → 2LiCl + Mg

The oxidation-reduction reaction or abbreviated as Redox is a chemical reaction in which there is a change in oxidation number

Reaction

2Li + MgCl₂ → 2LiCl + Mg

Oxidation is an increase in oxidation number, while reduction is a decrease in oxidation number.

Oxidation

Reduction

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