Question

Sodium hypohalite when dissolved in water will form
A) Hypohalous acid
B) Hydrochloric acid
C) Sodium chloride
D) None of these

Answer 1

Hint: We have to know that Arrhenius is one of the concepts for acid and bases. Swedish chemist Arrhenius is the world's first chemist to talk about acid and bases. Depending on his concept and limitations later so many concepts are developed. Even Arrhenius is the birthplace of the concept of acids and bases. Followed by Arrhenius chemist the concept of acids and bases discuss Bronsted and Lowry in the world.

Complete answer:
The molecular formula of Sodium hypo halite is \[NaOX\].
The molecular formula of hypohalous acid is \[HOX\].
The molecular formula of hydrochloric acid is \[HCl\].
The molecular formula of sodium chloride is \[NaCl\].
Sodium hypohalite when dissolved in water will form hypohalous acid.
The chemical reaction for Sodium hypohalite is dissolved in water is given below,
\[NaOX + {H_2}O \to HOX + NaOH\]
The symbol of \[X\,\]is used for an element; there are fluorine, chlorine, iodine and bromine in the chemical reaction.
According to the above discussion we conclude when sodium hypohalite is dissolved in water will form hypohalous acid.

Additional information:
According to the Arrhenius concept, one substance said to acid means, acid is nothing but a substance that dissociates to give hydrogen ion when decomposed in the water. Examples of Arrhenius acids are hydrochloric acid (\[{\text{HCl}}\]), sulphuric acid (\[{{\text{H}}_{\text{2}}}{\text{S}}{{\text{O}}_{\text{4}}}\]), nitric acid (\[{\text{HN}}{{\text{O}}_{\text{3}}}\]) etc,.
According to Arrhenius concept one substance said to base means, bases is nothing but a substance that dissociates to give hydroxyl ion when decomposed in water. Examples of Arrhenius bases are sodium hydroxide (\[{\text{NaOH}}\]), calcium hydroxide (\[{\text{Ca(OH}}{{\text{)}}_{\text{2}}}\]) etc,.

Note:
We need to remember that in generally, pH value of all acids are in between \[{\text{0}}{\text{.9}}\]- \[6.9\] and all the bases are in between\[7.1 - 14.0\]. But, Arrhenius theory has some limitations. One of the main limitations is not being able to explain the behaviour of acids and bases in non-aqueous solvents such as acetone etc,. It is not able to explain the acid which doesn't contain hydrogen and bases don’t contain hydroxyl ion in the formula. Ammonia is a well known base that is not accepted as base in Arrhenius base. These limitations are recovered by further coming theories like the Bronsted and Lowry concept of acids and bases.