Need help balancing half-reactions

Question

Separate this redox reaction into its balanced component half-reactions. Use the symbol e^- for an electron.

Cl2 + 2Na → 2 NaCl

Oxidation Half-Reaction:

Reduction Half-Reaction:

Answer 1

Cl in Cl2 has oxidation number = 0

Cl in NaCl has oxidation number = -1

Cl has been reduced

Na in Na has oxidation number of 0

Na in NaCl has oxidation number = +1

Na has been oxidized

Oxidation half reaction:

Na ==> Na⁺ + e- .. balanced oxidation half reaction

Reduction half reaction:

Cl₂ + 2e- ==> 2Cl^- .. balanced reduction half reaction

To finish balancing the oxidation reaction, you must multiply by 2 to equalize the electrons being transferred.

2Na ==> 2Na⁺ + 2e-