COMEDK · Chemistry · 18. Electrochemistry
Electrolysis of brine gives a mixture of
- A \(\mathrm{H}_{2}, \mathrm{Na}_{2} \mathrm{Cl}_{2}\)
- B \(\mathrm{Cl}_{2}, \mathrm{H}_{2}, \mathrm{NaOH}\)
- C \(\mathrm{H}_{2}, \mathrm{O}_{2}, \mathrm{NaOH}\)
- D \(\mathrm{O}_{2}, \mathrm{Cl}_{2}, \mathrm{NaOH}\)
Answer & Solution
Correct Answer
(B) \(\mathrm{Cl}_{2}, \mathrm{H}_{2}, \mathrm{NaOH}\)
Step-by-step Solution
Detailed explanation
Brine is a solution of sodium chloride and water. On electrolysis, it gives chlorine \(\left(\mathrm{Cl}_{2}\right)\), hydrogen \(\left(\mathrm{H}_{2}\right)\) and sodium hydroxide \((\mathrm{NaOH})\). At cathode \(2 \mathrm{H}^{+}(a q)+2 e^{-} \longrightarrow \mathrm{H}_{2}\)…
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