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

6

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

4

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

4

What is the coefficient for H₂O(l) when Sn²⁺(aq) + IO₃ ⁻(aq) → Sn⁴⁺(aq) + I⁻(aq) is balanced in acidic aqueous solution?

3

2

1

4

3

What is the coefficient for H₂O(l) when PbO₂(s) + I₂(s) → Pb²⁺(aq) + IO₃ ⁻(aq) is balanced in acidic aqueous solution?

4

2

10

6

4

What is the coefficient for H₂O(l) when SO₄ ²⁻(aq) + Br₂(l) → S₂O₃ ²⁻(aq) + BrO₃ ⁻(aq) is balanced in acidic aqueous solution?

1

6

12

24

1

What is the coefficient for OH⁻(aq) when SO₄ ²⁻(aq)+ Br₂(l) → S₂O₃ ²⁻(aq) + BrO₃ ⁻(aq) is balanced in basic aqueous solution?

2

1

3

4

2

What is the coefficient for H₂O(l) when SO₃ ²⁻(aq) + MnO₄ ⁻(aq) → SO₄ ²⁻(aq) + Mn²⁺(aq) is balanced in acidic aqueous solution?

3

1

2

6

3

What is the coefficient for OH⁻(aq) when PbO₂(s) + I₂(s) → Pb²⁺(aq) + IO₃ ⁻(aq) is balanced in basic aqueous solution?

8

6

4

2

8

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

8

6

4

2

8

How many electrons are needed to balance each of the following half-reactions?

Reduction half-reaction: Fe³⁺(aq) + _e ⁻ → Fe(s)

Oxidation half-reaction: Al(s) → Al³⁺(aq)+ _e ⁻

Overall reaction: Fe³⁺(aq) + Al(s) → Fe(s) + Al³⁺(aq)

3

0

6

2

3

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

8

4

6

2

8