Question

Consider the oxides of group 14 elements \(SiO_2​,GeO_2​,SnO_2​,PbO_2​,CO\) and \(GeO\). The amphoteric oxides are

• A. \(GeO, GeO_2​\)
• B. \(SiO_2​, GeO_2​\)
• C. \(SnO_2​, PbO_2​\)
• D. \(SnO_2​, CO\)

Answer 1

The Correct Option is C

The request requires identification of amphoteric oxides from a provided list of group 14 element oxides. Amphoteric oxides exhibit dual reactivity, acting as both acids and bases. Analysis of each option is necessary:

1. \(CO\): Classified as a neutral oxide, not amphoteric.
2. \(SiO_2\): Silicon dioxide is acidic; it is not amphoteric.
3. \(GeO\): Germanium monoxide is a basic oxide; it is not amphoteric.
4. \(GeO_2\): Germanium dioxide is amphoteric.
5. \(SnO_2\): Tin dioxide is amphoteric due to its capacity to react with both acids and bases.
6. \(PbO_2\): Lead dioxide is amphoteric, also demonstrating reactivity with both acids and bases.

Based on this assessment, the amphoteric oxides among the group 14 elements presented are \(SnO_2\) and \(PbO_2\). Consequently, the correct identification is:

\(SnO_2, PbO_2\)

These specific oxides, \(SnO_2\) and \(PbO_2\), react with acids such as hydrochloric acid and bases like sodium hydroxide, thereby showcasing their amphoteric nature.