Anhydrous is covalent however

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

Anhydrous

\text{AlCl}_3

is covalent however, when it is dissolved in water hydrated ionic species are formed. This transformation is owing to: (1) the trivalent state of Al (2) the large hydration energy of

\text{Al}^{3+}

(3) the low hydration energy of

\text{Al}^{3+}

(4) the polar nature of water

Related theory

Lattice Enthalpy
Ionic Bonding
Fajan's Rules
Chemical Bonding and Molecular Structure
The ionic model

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