Question

Aqueous solution of $N{a_2}{S_2}{O_3}$ on reaction with $C{l_2}$ gives :
(A) $N{a_2}{S_4}{O_6}$
(B) $NaHS{O_4}$
(C) $NaCl$
(D) $NaOH$

Answer 1

Hint : In the given question firstly we have to define what exactly is the Sodium thiosulfate. Then we have to give a proper overview of the processes and then the given reaction that will take place that is $Na{_2}{S_2}{O_3} + 4C{l_2} + 5{H_2}O \to 2NaHS{O_4} + 8HCl$ . This will give us a solution to the problem.

Complete Step By Step Answer:
The given question statement asks about the kind of arrow through which we would be able to get and explain the proper and correct explanation of all the steps involved in the reaction. So we have to explain what exactly are the reversible reactions and the correct answer of the problem.
Sodium thiosulfate which is also known as the sodium thiosulphate is an inorganic compound. The Chemical formula of the Sodium thiosulfate is $N{a_2}{S_2}{O_3}^.x{H_2}O$ and typically it is mostly available as the white or colorless pentahydrate, $N{a_2}{S_2}{O_3}\cdot5{H_2}O$ . The solid is an efflorescent (the process in which water is lost readily) crystalline substance that dissolves well in water.
Sodium thiosulfate is also used widely in the process of gold mining, water treatment, analytical chemistry and also in the development of silver-based photographic film and prints, and medicine. The medical uses of sodium thiosulfate include treatment of cyanide poisoning and pityriasis.
The chemical reaction for the given process would be as follows :
$Na{_2}{S_2}{O_3} + 4C{l_2} + 5{H_2}O \to 2NaHS{O_4} + 8HCl$
Now by this reaction we can clearly observe that the product which is yielded at the products end of the reaction is of $NaHS{O_4}$ .
Therefore the correct answer to the given problem would be option B, $NaHS{O_4}$ .

Note :
Sodium bisulfate is an acid salt formed by partial neutralization of sulfuric acid by an equivalent of sodium base, typically in the form of either sodium hydroxide (lye) or sodium chloride (table salt). It is a dry granular product that can be safely shipped and stored.