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

question 60

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)+ \(\mathrm { Cl } _ { 2 }\)

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