Question

What is acid?

Answer 1

acid is a substance that can donate or accept a proton. it is generally sour to taste and it turns blue litmus to red colour

Answer 2

An acid is a chemical species that donates protons or hydrogen ions and/or accepts electrons.

E.g.- HCl, H₂SO₄, etc.

Properties of acids-

1. pH is less than 7.
2. Turns blue litmus paper to red.
3. Reacts with metal to produce hydrogen gas.
4. Sour taste.