Question

Which of the following is a salt?
a. \[ HCl\]
b. \[NaOH\]
c. \[NaCl\]
d. \[C{{H}_{3}}COOH\]

Answer 1

Hint:Salt is a neutral chemical compound which formed by the cations and anions. The cations are positively charged ions while anions are negatively charged ions. Salt on dissociation, dissociated in the ions too. The edible salt is generally and mostly obtained to us from evaporation of seawater.

Complete answer:
The HCl is acidic here, not salt because it contains one hydrolyzing hydrogen. The Hcl is formed with polar ionic bonds and when it is placed in water the hydrogen will get a break from Cl to forn=m hydrogen ions. Thereby making the liquid acidic. It gives free hydrogen ions on dissociation. The equation for it is
\[HCl\to {{H}^{+}}+C{{l}^{-}}\]
Here NaOH is a base not a salt because on dissociation it gives hydroxide ions and sodium ions. It is the Arrhenius base whose hydroxide ions combine to form water. The equation for it is the following
\[NaOH\to N{{a}^{+}}+O{{H}^{-}}\]
NaCl is a salt, it is a common salt which is not formed from living matter. It is made when sodium atoms and chlorine atoms combine together. Generally it is formed by a neutralization reaction. The neutralization reaction says that when an acid and a base react together it forms salt and water. So the formation of NaCl takes place by the following equation.
\[NaOH+HCl\to NaC{{l}^{{}}}+{{H}_{2}}O\]
Hence $NaCl$ is a salt formed by the reaction of an acid with a base.
\[C{{H}_{3}}COOH\] is a weak acid. It is a weak acid because it does give its all free hydrogen on dissociation. It only gives off its hydrogen while others remain attached to it. The equation for it is the following:
\[C{{H}_{3}}COOH \to C{{H}_{3}}CO{{O}^{-}}+{{H}^{+}}\]

Therefore the correct answer for this question is option ‘c’.

Note:
The salt is being classified as follows, the teacher ,may ask you the question to identify the respective salt :
Acidic salt: It is salt which is formed by the partial neutralization of diprotic and polyprotic acid is called acid salt. These salts have ionisable hydrogen ions. example: \[NaHS{{O}_{4}}\]
Basic salt It is also formed by the partial neutralisation of strong acid with weak base. example white lead.
Double salt: The salts which contain one cation or one anion. This salt is formed by the combination of two different salts which are crystallised in the same ionic lattice.