Question

question 8 of 25 what is a redox reaction? a. a reaction in which the oxidation state of one element increases and another decreases b. a reaction in which the number of protons changes between the reactant and product c. a reaction in which an element changes phases when going from reactant to product d. a reaction in which an element in one molecule is traded for an element in another

Explanation:

A redox reaction involves oxidation - reduction. Oxidation is the increase in oxidation state (loss of electrons) and reduction is the decrease in oxidation state (gain of electrons). So, it is a reaction where the oxidation state of one element increases and another decreases.

Answer:

A. A reaction in which the oxidation state of one element increases and another decreases