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Which one of the following is a dibasic acid?
Question

Which one of the following is a dibasic acid?

A.

HCl

B.

H3PO4H_3PO_4​​

C.

HNO3HNO_3​​

D.

H2SO4H_2SO_4​​

Correct option is D

The correct answer is  (d) ​H2SO4H_2SO_4

Explanation:
 
  • Sulfuric acid (H₂SO₄) is a dibasic acid, meaning it can donate two protons (H⁺ ions) per molecule. This property classifies it as a dibasic acid. 
  • A dibasic acid, also known as a diprotic acid, is an acid that can donate two protons (H⁺ ions) per molecule in an aqueous solution. Sulfuric acid (H₂SO₄) contains two hydrogen atoms, both of which are ionizable, allowing it to donate two protons. This characteristic classifies H₂SO₄ as a dibasic acid. 

Information Booster:
  • Monobasic Acids: Acids that can donate only one proton per molecule, such as hydrochloric acid (HCl).
  • Tribasic Acids: Acids that can donate three protons per molecule, such as phosphoric acid (H₃PO₄).
  • Tetrabasic Acids: Acids that can donate four protons per molecule, such as silicic acid.
  • Acid Strength: The ability of an acid to donate protons is related to its strength; however, the number of protons an acid can donate does not necessarily determine its strength.
  • Acid-Base Reactions: Dibasic acids can participate in reactions where they donate two protons, affecting the pH and buffering capacity of solutions.
  • Industrial Applications: Sulfuric acid is used in the production of fertilizers, detergents, and food additives.

Additional Information:
  • HCl: Hydrochloric acid is a monobasic acid, donating only one proton per molecule.
  •  H₃PO₄: Phosphoric acid is a tribasic acid, capable of donating three protons per molecule.
  •  HNO₃: Nitric acid is a monobasic acid, donating only one proton per molecule.

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