pure LiCl is hydrated but pure NaCl is always annhydrous why?????

garvit

piyush jain

hello friend

Li ion being smaller possess high charge density & possess high degree of hydration than that of sodium

thier lattice energies r comparable & that is why LiCl is hydrated but pure NaCl is always annhydrous . ans...............

******************************

kjvenky

Any salt is hydrated means that ithas formed bonds with water molecules. For any hydration to take place heat of hydration should be greater than heat of breakage of bond in salt.
Now in NaCl and LiCl as anion is same only difference comes in cation. Li+ has higher charge density and which means more energy is realeased as heat of hydration for LiCl than NaCl hence more hydrated.

Sagar Saxena

Li+ due to its high positive charge density because of its small size is surrounded by OH- ions and Cl- ions by H+ ions of water molecules therefore it is found in hydrated state.

Ask & Discuss Questions with Community & Experts