A dry pellet of a common base B, when kept in the open absorbs moisture and turns sticky. The compound is also a by-product of the chloralkali process. Identify B. What type of reaction occurs when B is treated with an acidic oxide? Write a balanced chemical equation for one such solution.


A compound which is a byproduct of the chloralkali process is NaOH. Hence compound B is NaOH.

When NaOH is treated with acidic oxide neutralization process occurs. For example, If NaOH is treated with carbon-di-oxide, it gives Sodium carbonate.

2NaOH + CO2 → Na2CO3 + H2O

Chlor-alkali process

When electricity is passed through an aqueous solution of sodium chloride it decomposes to form sodium hydroxide. The process is called the chlor-alkali alkali process.

An aqueous solution of sodium chloride is called brine.

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

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