0
Still curious? Ask our experts.
Chat with our AI personalities
Taiga
Vivi
EzraZnO appears yellow upon heating due to the formation of zinc oxide nanoparticles. The optical properties of the nanoparticles can cause a shift in the absorption spectrum, leading to the yellow color. This change in color is often attributed to the quantum confinement effect that occurs at the nanoscale level.
Add your answer:
Earn +20 pts
What is the word equation for heating zinc with air?
The word equation for heating zinc with air is: zinc + oxygen → zinc oxide.
Why methyl orange is used as indicator in determination of ZnO?
Methyl orange is used as an indicator in the determination of ZnO because it changes color from red to yellow at a pH range of 3.1-4.4, which is suitable for the titration of ZnO with a strong acid like hydrochloric acid. This color change helps in determining the endpoint of the titration accurately.
Is ZnO soluble in water?
Zinc oxide (ZnO) is not very soluble in water.
What metal reacts with steam to give an oxide that is yellow when and white when cold?
Iron reacts with steam to give iron(III) oxide, which is yellow when hot and white when cold.
What is the reaction for h2so4 plus zno?
The reaction between sulfuric acid (H2SO4) and zinc oxide (ZnO) produces zinc sulfate (ZnSO4) and water (H2O). The balanced chemical equation for this reaction is: H2SO4 + ZnO → ZnSO4 + H2O.
