Question

What is a compound that produces hydrogen ions in solutions?

Answer 1

Hint: various compounds have the tendency to dissociate when added in solutions like water. This dissociation liberates various types of ions in the solution. When hydrogen ions are produced in a solution, then the pH of that solution gets lowered and ranges from 1 – 5 or 6.

Complete answer:
The dissociation of any compound produces various ions in solutions. Ions are produced in any solution only, when the added electrolyte is of the same type as that of the solution, because like dissolves like. Some compounds have the tendency to liberate hydrogen ions in the solution. These solutions, when subjected to determining the pH, have a pH range of 1 to 6, this means that these compounds are acidic compounds.
Thus acids have the tendency to liberate hydrogen, $H^{+}$ ions in solutions. When dissolved in water, they have the tendency to give, $H_3{O}^{+}$ ions, which are also acidic and are called hydronium ions. This is because the water molecule readily takes up the liberated $H^{+}$ion from the acids and forms a hydronium ion.
Some compounds which are acidic and produces hydrogen ions in solutions are, HCl, $H_{2}S{O}_4,HN{O}_3,C{H}_{3}COOH$ , etc.
Hence, acids are the compounds that produce hydrogen ions in solutions.

Note:
The fact that acids produce hydrogen ions in solutions makes them weak and strong acids. The acids that completely dissociate into hydrogen ions are termed as strong acids, like HCl, and $H_{2}S{O}_4$, while the acids that partially dissociates into hydrogen ions are termed as weak acids like, acetic acid, $C{H}_{3}COOH$.