Chemistry · S and p Block Elements
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The amphoteric oxide Is
- A
NaOH (Sodium Hydroxide)
- B
Ca(OH)2 (Calcium Hydroxide)
- C
CaO (Calcium Oxide)
- D
KOH (Potassium Hydroxide)
Calcium oxide (CaO) is the correct answer because it is an amphoteric oxide capable of reacting with both acids and bases to form calcium salts and water. Sodium hydroxide (NaOH), calcium hydroxide (Ca(OH)2), and potassium hydroxide (KOH) are all strong bases, not oxides, and do not exhibit amphoteric behavior.
Sodium hydroxide is a strong base and not an oxide. It does not exhibit amphoteric behavior as it only reacts with acids.
Calcium hydroxide is a base, not an oxide, and does not have amphoteric properties. It reacts with acids but not with bases.
Calcium oxide is an amphoteric oxide. It can react with both acids and bases, forming calcium salts and water.
Potassium hydroxide is a strong base, not an oxide, and is not amphoteric. It reacts with acids but not with bases.
Tagged under Chemistry · S and p Block Elements · 2010