Question

a dry pellet of common base B when kept in open absorb moisture and turn sticky the compound b is also a byproduct of chloro alkali process identify b state the type of reaction that occurs when when b is treated with an acidic oxides say Sulphur dioxide also write chemical equation for the reaction involved

Answer 1

Base B is sodium hydroxide (NaOH). Dry pellets of sodium hydroxide (NaOH) absorb moisture  from the atmosphere and becomes sticky. It is also a by-product of chloralkali process. The acidic oxide  such as CO2 reacts with a base such as NaOH to give salt (sodium carbonate) and water. Such reaction is  called neutralization reaction.

Thus, ‘B’ is NaOH and reaction between ‘B’ and acidic oxide is called a neutralization reaction.

2NaOH(s) + CO2(l) →Na2CO3(s) + H2O(l)

Answer 2

A dry pellet of common base B is $NaOH$ and the type of reaction is a neutralization reaction.

Explanation:

• Base B $NaOH$ when kept  open absorb moisture and turn sticky
• the compound B is Sodium hydroxide which is also a byproduct of chloro alkali process
• Dry pellets of sodium hydroxide $NaOH$ absorb moisture from the atmosphere. The pellets become sticky on the surface of sodium chloride.
• The chloralkali process is used for the electrolysis of sodium chloride.
• When electricity is passed through the solution of brine it decomposes to form sodium hydroxide.
• The complete reaction which occurs is as follows :

$NaCl +2H2O$→$2NaOH + Cl2 + H2$

• The acidic oxide  such as CO2 reacts with a base such as NaOH to give salt (sodium carbonate) and water.
• This reaction is  called a neutralization reaction.