Question

Is $A{l_2}{O_3}$ soluble or insoluble?

Answer 1

Hint: In order to this question, first we will explain whether the given compound $A{l_2}{O_3}$ is soluble or insoluble with the appropriate reason, and then we will discuss much more about the given compound. And atlast we will discuss how the given compound is used in the gem industry.

Complete answer:
Aluminium oxide, $A{l_2}{O_3}$ , is nearly insoluble in water and other solvents. The explanation for this feature is that the oxide ions are trapped in the solid lattice by a strong attractive force. To put it another way, Aluminium oxide has a large and complex lattice structure with strong covalent bonds, making it insoluble.
Aluminium oxide, often known as $A{l_2}{O_3}$ , is a chemical compound made up of aluminium and oxygen with the formula Al2O3. It's the most common of numerous aluminium oxides, and it's known as \[aluminum\left( {III} \right){\text{ }}oxide\] . It's known as alumina, but it's also known as aloxide, aloxite, or alundum, depending on the form or application.
Corundum is the most prevalent crystalline form of aluminium oxide found in nature. Rubies and sapphires are gem-quality varieties of corundum that get their colour from trace impurities. Traces of chromium give rubies their typical deep red colour and laser properties. Other impurities, such as iron and titanium, give sapphires their varied colours.
Although $A{l_2}{O_3}$ is an electrical insulator, it possesses a high heat conductivity for a ceramic material ( \[30{\text{ }}W{m^{ - 1}}{K^{ - 1}}\] ). Water does not dissolve aluminium oxide. Its hardness makes it appropriate for use as an abrasive and as a component in cutting tools in its most common crystalline form, corundum or -aluminium oxide.

Note:
Aluminium oxide is utilised in the creation of sapphires and rubies in the gem business. Alumina is the base element for the formation of these two precious gems in its crystalline form, or corundum. Aluminium oxide is a great filler for bricks, polymers, and heavy clayware since it is chemically inert.