Question

What is the main ore of Zinc? Write its chemical formula? How is this metal ore changed into its oxide?

Answer 1

Part:1

• Zinc-Blende is also known as Sphalerite.
• Zinc-Blende is a mineral of Zinc Sulphide, and it is the most common Zinc ore.

Part:2

• $\mathbf{ZnS}$ is the chemical formulae of Zinc Sulphide.

Part:3

• Sulphide ores are converted to metal oxides by heating in the presence of air.
• When the Zinc blend is heated in the presence of air, it is converted into Zinc oxide.

$$\begin{gathered} \mathbf{2}\mathbf{ZnS}\mathbf{}\mathbf{\left(}\mathbf{s}\mathbf{\right)}\mathbf{}\mathbf{+}\mathbf{}\mathbf{3}{\mathbf{O}}_{\mathbf{2}}\mathbf{}\mathbf{\left(}\mathbf{g}\mathbf{\right)}\mathbf{}\underset{\mathbf{∆}}{\overset{\mathbf{surplus}}{\mathbf{\to }}}\mathbf{}\mathbf{2}\mathbf{ZnO}\mathbf{}\mathbf{\left(}\mathbf{s}\mathbf{\right)}\mathbf{}\mathbf{+}\mathbf{}\mathbf{2}{\mathbf{SO}}_{\mathbf{2}}\mathbf{}\mathbf{\left(}\mathbf{g}\mathbf{\right)} \\ \mathbf{Zinc}\mathbf{}\mathbf{blend}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{}\mathbf{Zinc}\mathbf{}\mathbf{oxide} \end{gathered}$$