What is the coefficient for OH⁻(aq) when SO₃ ²⁻(aq) + MnO₄ ⁻(aq) → SO₄ ²⁻(aq) + Mn²⁺(aq) is balanced in basic aqueous solution?

6

3

2

1

What is the coefficient for H₂O(l) when S²⁻(aq) + NO₃ ⁻(aq) → S(s) + NO(g) is balanced in acidic aqueous solution?

4

2

1

3

What is the coefficient for H₂O(l) when MnO₄ ⁻(aq) + Fe²⁺(aq)→ Mn²⁺(aq) + Fe³⁺(aq) is balanced in acidic aqueous solution?

4

2

6

1