Question

In cold regions during winter …………… freezes at room temperature itself and looks ice.
A. Palmitic acid
B. Linoleic acid
C. Oleic acid
D. Ethanoic acid

Answer 1

Hint: An acid is a molecule or ion which is capable of donating proton where proton can be described as positively charged ions represented by ${{H}^{+}}$ i.e. hydrogen ion this definition of acid is given by Bronsted Lowry.

Complete step by step answer:
- Acid can also be defined as that molecule or ion which is capable of making a covalent bond with an electron pair. We know that there are three states of matter which are known by the name solid, liquid and gases and the term freezing refers to the phase change of a substance from liquid state to solid state which describe that substance is changing from one state to another.
- In the given question the acid which freezes in water at room temperature and looks like an ice is ethanoic acid. It freezes and forms glacier-like shapes. That's why it is also known by the name glacial acetic acid sometimes, ethanoic acid is IUPAC name of acetic acid where IUPAC stands for International Union of Pure and Applied Chemistry which defines some rules for naming of compounds. The correct answer is option “D” .

Note: The main properties of acids are it has a sour taste, turns blue litmus to red, reacts with different bases to form salts and these are good conductors of heat and electricity. According to pH scale acids have pH value greater than 7.