Question

how do you balance half-reactions

heres some examples from my homework

1) O2 —> H2O

2) ClO- —> Cl-

3) I- —> IO-

4) Cl2O7 —> ClO-

5) NO2- —> N2O-^2-

Answer 1

1 2 ceo - le Balance Oxyg Balance cance Oxygen co - 0 + H₂O ce Hy drogen co + 2H2 6 5 cé+M120 +20 - Ceo-t H₂O + 2é et 2011 Hydrogen E is I Oo - H₂O Balance oxygen 10 H2O Balqace Hydrogen O2 + 2H+ H2O Balance charge tog t2nt té H2O 1. (Reduction) 8) I I0 galance ox69л 2 + H, o - To" I+H₂O 207zHt Balance Hydrogen Balance charge It H2o - Lo +244 +2é 4) а, о, — от Balence chlorine ClO 2400 Balance oxygen ₂07 + 5420 260075420 Balance Hydrogen (8,07 +10147 248oʻ+5H20 Balance charge Qoftlont the 200 15400 Loxidation (Reduction)

3) Hoog - N20²- Balance Nirogen ano - Nec dаlалее окче го — м, о“+ 2 H, 0 Balince Hydrogen ang tont 20²73120 Balance charge ano, tonttoe - N20 ²7 3420