What is the dissociation equation of Al2Cl6(s)?

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Answer 1 · 2018-03-13T13:00:24

#"Al"_2"Cl"_6 ⇌ 2"AlCl"_3#

#"Al"_2"Cl"_6# is remarkably stable.

Even at the sublimation temperature (180 °C), it exists as the dimer.

At higher temperatures, it dissociates into the monomer.

#"Al"_2"Cl"_6 ⇌ 2"AlCl"_3#

In the dimer, bridging #"Cl"# atoms join the two #"Al"# atoms.

Dimer

The monomer has a trigonal planar structure.

Monomer