1. Tardigrade
  2. Question
  3. Chemistry
  4. Statement I Al ( OH )3 is amphoteric in nature. Statement II Al - O and O - H bonds can be broken with equal case in Al ( OH )3 (1) Statement I is correct: Statement II is correct; Statement II is the correct explanation of Statement I. (2) Statement I is correct; Statement II is correct; Statement II is not the correct explanation of Statement I. (3) Statement I is correct; Statement II is incorrect. (4) Statement I is incorrect; Statement II is true.

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. Statement I $Al ( OH )_{3}$ is amphoteric in nature.
Statement II $Al - O$ and $O - H$ bonds can be broken with equal case in $Al ( OH )_{3}$
(1) Statement I is correct: Statement II is correct; Statement II is the correct explanation of Statement I.
(2) Statement I is correct; Statement II is correct; Statement II is not the correct explanation of Statement I.
(3) Statement I is correct; Statement II is incorrect.
(4) Statement I is incorrect; Statement II is true.

IIT JEEIIT JEE 1998General Principles and Processes of Isolation of Elements

Solution:

$Al(OH)_3$ is amphoteric
$\underset{\text{Base}}{Al(OH)_3}+3HCl\rightarrow AlCl_3+3H_2O$
$\underset{\text{Acid}}{Al(OH)_3}+NaOH\rightarrow Na[Al(OH)_4]$
High charge and small size of $Al^{3+}$ makes $Al-O$ and $O-H$ bonds equally ionisable.