Zinc oxide loses oxygen on heating according to the reaction, ZnO stackrel text heat longrightarrow Zn 2+(1/3) O 2+2 e- It becomes yellow on heating because

Question

Zinc oxide loses oxygen on heating according to the reaction, ZnO stackrel text heat longrightarrow Zn 2+(1/3) O 2+2 e- It becomes yellow on heating because (A) Zn2+ ions and electrons move to interstitial sites and F-centres are created (B) oxygen and electrons move out of the crystal and ions become yellow (C) Zn2+ again combine with oxygen to give yellow oxide (D) Zn2+ are replaced by oxygen

Tardigrade Admin · Accepted Answer

Correct answer is (a) Zn2+ ions and electrons move to interstitial sites and F-centres are created

Q. Zinc oxide loses oxygen on heating according to the reaction,
$Z n O ⟶ heat Z n^{2} + \frac{1}{3} O_{2} + 2 e^{-}$
It becomes yellow on heating because

$Z n^{2 +}$ ions and electrons move to interstitial sites and $F$ -centres are created

oxygen and electrons move out of the crystal and ions become yellow

$Z n^{2 +}$ again combine with oxygen to give yellow oxide

$Z n^{2 +}$ are replaced by oxygen

Correct answer is (a) $Z n^{2 +}$ ions and electrons move to interstitial sites and $F$ -centres are created

Q. Zinc oxide loses oxygen on heating according to the reaction, ZnO⟶ heat ​Zn2+31​O2​+2e− It becomes yellow on heating because

Zn2+ ions and electrons move to interstitial sites and F-centres are created