Question

Which of the following are properties of acids?
(A) All acids have a sour taste
(B) Acids turn blue litmus red
(C) Acids turn red litmus blue
(D) All acids form ${H^ + }$ ions in water

Answer 1

Inorganic acids mostly contain hydrogen atoms and this acid can be dissociated to give ions. Upon dissociation of acids, acids release two ions, one of the ions is a hydrogen ion. The nature of compounds can be identified by identification test litmus test.

Complete Step By Step Answer:
Chemical compounds are classified into three types based on their nature. They are acids, bases, and neutral substances. Acids can release hydrogen ions $\left( {{H^ + }} \right)$ , strong acids can easily release hydrogen ions, whereas weak acids cannot easily release hydrogen ions.
When acid is treated with water, the hydrogen ion releases from acid and reacts with water to form a molecule known as hydronium ion $\left( {{H_3}{O^ + }} \right)$ .
All the acids have a sour taste. To detect the nature of chemical compounds, litmus paper can be used. When the blue litmus paper is kept in contact with the acidic substance, then that blue litmus paper can be turned into a red color.
Thus, all acids have a sour taste. Acids turn blue litmus to red. All acids form ${H^ + }$ ions in water.
Options A, B, and D are the correct ones.

Note:
The main use of litmus paper is the identification of nature whether the given compound is acidic or basic. In the presence of basic compounds, the red litmus paper turns to blue and the blue litmus paper turns to red in the presence of acidic compounds.