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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
p Block Elements (Group 13 & 14)

NTA Abhyas 2020 · Chemistry · p Block Elements (Group 13 & 14)

AlC l _ 3 achieves stability by forming a dimer. In trivalent state...

AlCl3AlC{l}_{3} achieves stability by forming a dimer. In trivalent state the compound is hydrolysed in water. AlCl3AlC{l}_{3} in acidified aqueous solution forms

Options

  1. AAl(OH)3+HClAl{\left(OH\right)}_{3} + HCl
  2. B[Al(H2O6]3++3Cl−[ Al{\left({H}_{2}{O}_{6}\right]}^{3 +} + 3Cl^{-}
  3. CAlCl3.2H2OAlC{l}_{3}. 2{H}_{2}O
  4. DAl2O3+HClA{l}_{2}{O}_{3} + HCl

Correct answer

B. [Al(H2O6]3++3Cl−[ Al{\left({H}_{2}{O}_{6}\right]}^{3 +} + 3Cl^{-}

Step-by-step solution

AlCl3AlC{l}_{3} in acidified aqueous solution forms [Al(H2O)6]3+{\left[Al{\left({H}_{2}O\right)}_{6}\right]}^{3 +} ion.

AlCl3+9H2O→[Al(H2O)6](OH)3+3H++3Cl−AlC{l}_{3} + 9{H}_{2}O \to \left[Al{\left({H}_{2}O\right)}_{6}\right]{\left(OH\right)}_{3} + 3H^{+} + 3Cl^{-}
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