A Major Source of Chlorine Gas $\mathrm { Cl } _ { 2 }$

Multiple Choice

A major source of chlorine gas, $\mathrm { Cl } _ { 2 }$ ,is from the electrolysis of brine,which is concentrated salt water, $\mathrm { NaCl } ( \mathrm { aq } )$ Which of the following is the balanced chemical reaction for this electrolysis reaction?

A) NaCl (aq) + H₂O ? NaOH (aq) + $\mathrm { Cl } _ { 2 }$ (g) + $\mathrm { H } _ { 2 }$ (g)
B) 2 NaCl (aq) + $\mathrm { H } _ { 2 }$ O ? $\mathrm { Na } _ { 2 }$ O (aq) + 2 HCl (aq)
C) 2 NaCl (aq) + 2 $\mathrm { H } _ { 2 }$ O ? 2 Na (s) + O₂ (g) + 2 $\mathrm { H } _ { 2 }$ (g) + $\mathrm { Cl } _ { 2 }$ (g)
D) 2 NaCl (aq) + $\mathrm { H } _ { 2 }$ O ? 2 NaH (aq) + $\mathrm { Cl } _ { 2 }$