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One way to remove excess insoluble metal oxide from acid is by filtration. The solid metal oxide can be separated from the acid solution by passing it through a filter paper, leaving behind the liquid acid. The collected solid can then be washed with more acid to ensure that any remaining traces are removed.

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1y ago

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Which metal oxides are insoluble in water and which are soluble?

Insoluble metal oxides generally include group II metal oxides like calcium oxide (CaO) and magnesium oxide (MgO). Soluble metal oxides often belong to group I metals like sodium oxide (Na2O) and potassium oxide (K2O), as well as transition metals like iron oxide (Fe2O3) and copper oxide (CuO).


What metal compound is green and insoluble?

Chromium(III) oxide has a beautiful green color.


Why is white powder probably metal oxide?

White powder is probably a metal oxide because metal oxides commonly have a white color. Metal oxides are formed when metals react with oxygen, producing compounds like rust (iron oxide) or zinc oxide, which are white powders. Additionally, metal oxides are typically insoluble in water and have higher melting points.


How do you extract metal from its oxide?

Metal can be extracted from its oxide by a process called reduction. This involves using a reducing agent such as carbon or hydrogen to remove the oxygen from the metal oxide. The metal is then left in its elemental form.


What happens to iron oxide when it is dissolved?

Iron oxide (Fe2O3) in insoluble in water.


When 1.187 grams of metallic oxide is reduced with excess hydrogen 1.054 grams of the metal is produced What is the metallic oxide?

The molar mass of the metal can be found by taking the difference in mass before and after reduction. The difference in mass is 0.133 grams and the molar mass of the metal is determined to be 29 grams/mol, suggesting the metallic oxide is iron (III) oxide (Fe2O3).


How do you make a soluble salt from an insoluble metal oxide?

Dissolve it in diluted nitric acid. WARNING: This is potentially highly dangerous and proper safeguards should be employed, for example gloves, facemask, fume cupboard with shield down etc etc. and take advice.


Why do metals have to be sandpapered?

The reason why metal have to be clean with sandpaper is to remove the oxide layer on the surface of the metal. This is because most metal have a high tendency toward oxygen. The metal will react with oxygen in the air and form an oxide layer on the surface of the metal.


Is CaO a metal oxide or non metal oxide?

Calcium is a metal, therefore this is a metal oxide.


What is the oxide of a metal called?

The oxide of a metal is called a metal oxide. It is a compound formed by a metal and oxygen atoms.


Does zirconium oxide dissolve in water?

No, zirconium oxide does not dissolve in water because it is a highly insoluble compound. Its strong ionic bonds prevent it from dissociating in water, making it practically insoluble in this solvent.


What is the solubility of zinc oxide in different solvents?

The solubility of zinc oxide varies in different solvents. It is generally insoluble in water but can dissolve in acidic or basic solutions. In organic solvents, such as ethanol or acetone, zinc oxide is also insoluble.