Acids and bases are substances that can donate or accept protons, respectively.

• Acids are substances that release hydrogen ions (H+) in water.

• Bases are substances that release hydroxide ions (OH-) in w...read more

Acids are called as proton donors which donates protons in solution to any other substance bases are called as proton acceptors which accept protons in solution from any other substance

The concentration of H+ ions is called acids.and range 0 to 7 acids.The concentration of OH - ions is called basis.and range 7 to 14.and 7 is a neutral 

0 to 7 pH acids 7 to 14 base

It can be used determine ph