Which of the following is an oxidation reaction?
A.
AuCl4- → AuCl 2- ****
B.
Mn7+ → Mn2+
C.
Cl2 → ClO3-
D.
Co3+ → Co2+
2 answers
c. Cl in Cl2 lost electrons to to a positive state (Cl+5)
Darn that was my first answer, I just second guessed myself...thank you!