S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which compound is amphoteric (can act as both an acid and a base)?

  • (A) NaOH
  • (B) HCl
  • (C) Al(OH)3
  • (D) CH4
  • Correct Answer - Option(C)
  • Views: 1
  • Filed under category Chemistry
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Explanation by: Shyam Dubey
Aluminum hydroxide Al(OH)3 can react with acids (acting as a base) and with strong bases (acting as an acid) to form aluminate ions — that's amphoteric behavior. NaOH is purely basic, HCl is purely acidic, and CH4 (methane) is neither acidic nor basic in aqueous chemistry context. Therefore Al(OH)3 is correct.

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