Question

Among the various inorganic acids, like, $HN{O}_3$, $HCl{O}_4$ and $H_{2}S{O}_4$, sulphuric acid is highly syrupy in nature. Explain.

Answer 1

1.In $HN{O}_3$, there exist covalent bond between H and N & coordinate covalent bond between N and O and Hydrogen bonds exist between two nitric acid molecules and also with water molecules.

2.In $HCl{O}_4$, there exist covalent bond between H and Cl & coordinate covalent bond between Cl and O.

3.In $H_{2}S{O}_4$, there exist covalent bond between H and S & Hydrogen bonds exist between two sulphuric acid molecules and also with water molecules.

Hence, sulphuric acid becomes viscous because of slow movement of molecules due to H-bonding.