Q. 124.5( 2 Votes )

Which of the following is amphoteric oxide?
Mn2O7, CrO3, Cr2O3, CrO, V2O5, V2O4
A. V2O5, Cr2O3
B. Mn2O7, CrO3
C. CrO, V2O5
D. V2O5, V2O4

Answer :

  • Amphoteric oxides react with both bases and acids. V2O5 and Cr2O3 are both amphoteric.
  • V2O5 reacts with alkalies as well as acids to give VO43− and VO4+ respectively.
  • In higher oxides, acidic character predominates and therefore V2O5 is slightly acidic.

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