Answer: Option (a) is the correct answer.
Explanation:
A property that depicts change in chemical composition of a substance is known as a chemical property.
For example, reactivity, toxicity, combustion etc are all chemical properties.
The pH of vinegar is around 2.4 this means that vinegar is acidic in nature. This shows reactivity of vinegar as it is being acidic in nature.
On the other hand, a property that does not bring any change in chemical composition of a substance is known as a physical property.
For example, boiling point, melting point, density etc are all physical properties.
Thus, we can conclude that the pH of vinegar is around 2.4 is a chemical property of vinegar.
