pierresagop47ucu pierresagop47ucu Today at 6:32 PM Chemistry Answered Which of the following chemical equations represents an oxidation-reduction reaction? A. Mg(OH)2 + 2HCl →MgCl2 + 2H2O B. BiCl2 + Na2SO4 →2NaCl + BiSO4 C. CH4 + 2O2→CO2 + 2H2O D. 3NaOH + H3PO4→Na3PO4 + 3H2O