Which is the balanced version of the half-reaction below that occurs in acidic solution? NO3--->NO2 A. 2NO3 → 3N02
B. 2NO3 → 2N02 + O2
C. NO3 + 2H+ + € → NO2 + H20
D. NO3 + H20 + 2e → NO2 + 2H+ + 2e

Oxygen has oxidation number of –2 except in peroxides, O2 ... Split the equation into two half-equations, one for oxidation and one for ... Cu + NO3. – → Cu2+ + NO2 ox. no. Cu=0 N=+5 Cu=+2 N=+4. O=–2. O=–2 ... (Notice that we have left out H+ and H2O for acidic solution or OH– and H2O for basic ... Cu → Cu2+ + 2e–.

Explanation:

its first and third is your answer i did the qustion the fourth isnt right