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Which of the following is/are amphoteric?

Options

  1. AAl ( OH )₃(s) and Fe ( OH )₃(s)
  2. BAl ( OH )₃(s) and HCO ₃⁻( aq )
  3. CBa ( OH )₂(s) and NaOH (a q)
  4. DAl ( OH )₃(s) only

Correct answer

B. Al ( OH )₃(s) and HCO ₃⁻( aq )

Step-by-step solution

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