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For a half-reaction in an acidic solution, which substances should you add to balance the equation?
A. H+ and H20
B. H+ and OH-
C. H20 and NO2
D. OH-

Respuesta :

the answer to this question is A

Answer: A. [tex]H^+[/tex] and [tex]H_2O[/tex]

Explanation: If a redox reaction takes place in an acidic medium then oxygen is balanced by adding [tex]H_2O[/tex] and hydrogen is balanced by adding [tex]H^+[/tex] . If the reaction takes place in basic medium then we use [tex]OH^-[/tex] in place of [tex]H^+[/tex] .

Since, the question asks about balancing a half-reaction in an acidic medium, [tex]H_2O[/tex]  and [tex]H^+[/tex] are added to balance the equation and hence the correct choice is A.

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