MCQ
Which of the following compound is amphoteric
- A$Cr(OH)_2$
- B$Fe(OH)_2$
- ✓$Cr(OH)_3$
- D$Fe(OH)_3$
✓
Answer
Correct option: C.
$Cr(OH)_3$
c
Cr$(O H)_{3}$ reacts with bases (hydroxide ions) to give $\left[ Cr ( OH )_{6}\right]^{3-} .$ It also reacts with acids (hydrogen ions) to give $\left[ Cr \left( H _{2} O \right)_{6}\right]^{3+}$
Cr$(O H)_{3}$ reacts with bases (hydroxide ions) to give $\left[ Cr ( OH )_{6}\right]^{3-} .$ It also reacts with acids (hydrogen ions) to give $\left[ Cr \left( H _{2} O \right)_{6}\right]^{3+}$
Hence,it act as amphoteric dissolve in both acid and base.
Thus,option C is correct.
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