Question

Which of the following(s) undergoes thermal decomposition to give off oxygen?

• A. $HgO$
• B. $A{g}_{2}O$
• C. $Pb{O}_2$
• D. All of the above

Answer 1

The correct option is D All of the above

Thermal decomposition of oxides of metals:
$2HgO\left(s\right)\stackrel{{450}^{o}C}{\to }2Hg\left(𝓁\right)+O_2\left(g\right)2A{g}_{2}O\left(s\right)\stackrel{{350}^{o}C}{\to }4Ag\left(s\right)+O_2\left(g\right)2Pb{O}_2\left(s\right)\stackrel{\Delta }{\to }2PbO\left(s\right)+O_2\left(g\right)$