Aluminum chloride exists as a dimer Al2Cl6 in solid state as well as in solution of non-polar solvents such as C6H6. When dissolved in acidified aqueous solution, it gives:
A
Al2O3+6HCl
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B
2[Al(H2O)6]3++6Cl−
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C
H3[Al(OH)6]+6HCl
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D
Al3++3Cl−
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Solution
The correct option is B2[Al(H2O)6]3++6Cl− Al2Cl6 when dissolved in acidified aqueous solution gives: Al2Cl6+12H2O→2[Al(H2O)6]3++6Cl−
Hence, option b is the correct answer.