Which of the following is the Latin word that acid is derived from?

Acere 

The correct answer is option 2. Acere.

The word "acid" is derived from the Latin word "acidus." In Latin, "acidus" means sour or sharp. This term was later adopted into English to describe substances with certain chemical properties, particularly those that have a sour taste.

The concept of acidity in chemistry is associated with substances that can donate protons (hydrogen ions) in aqueous solutions. Acids have characteristics such as a sour taste, the ability to turn blue litmus paper red, and the ability to react with bases to form salts and water in neutralization reactions.

The Latin root "acidus" reflects the historical association of acidic substances with a sour taste, and this term has been retained in modern chemistry to describe a class of compounds with specific chemical properties.