Chemistry - Redox Reactions - Balancing redox equations - Redox Balancing Quiz

5-question quiz on redox balancing. Q1: 'In the half-reaction method, oxygen atoms are balanced by adding:' A) O₂ B) H₂O C) OH⁻ D) O²⁻ (Answer: B in acidic, C in basic). Q2: 'How many electrons are transferred in: MnO₄⁻ → Mn²⁺?' A) 2 B) 3 C) 5 D) 7 (Answer: C - Mn goes from +7 to +2). Q3: 'In Cr₂O₇²