NCERT Exemplar Solutions
Class 10 - Science - CHAPTER 2: Acids, Bases and Salts - Multiple Choice Questions
Question 30

Question.  30

Identify the correct representation of reaction occurring during chloralkali process

(a)

2NaCl(l) + 2H₂O(l) → 2NaOH(l) + Cl₂(g) + H₂(g)

(b)

2NaCl(aq) + 2H₂O(aq) → 2NaOH(aq) + Cl₂(g) + H₂(g)

(c)

2NaCl(aq) + 2H₂O(l) → 2NaOH(aq) + Cl₂(aq) + H₂(aq)

(d)

2NaCl (aq) + 2H₂O (l) → 2NaOH (aq) + Cl₂(g) + H₂(g)

Detailed Answer with Explanation:

Steps: Chloralkali process electrolyses aqueous NaCl to give NaOH (aq), Cl₂ (g) and H₂ (g). Equation (d) correctly indicates aqueous NaCl reacts producing aqueous NaOH and gaseous Cl₂ and H₂.

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