Confused about the nomenclature of this compound (CrO3)

CrO3), also known as Chromic Acid, is a compound with the chemical formula CrO3. It is a strong oxidizing agent and is commonly used in organic synthesis. On the other hand, Chromium (III) Oxide (Cr2O3) is a compound with the chemical formula Cr2O3. It is a basic oxide and is used as a pigment in paints and ceramics.In summary, CrO3 is also known as Chromic Acid and is a strong oxidizing agent. Cr2O3 is also known as Chromium (III) Oxide and is used as a pigment. The addition of water to CrO3 forms Chromic Acid, which is H2CrO4. The equilibrium of aque
  • #1
chemist2b
14
0
So I'm a little confused about the nomenclature of this compound (CrO3). is it chromium (VI) oxide? chromic acid? and then Cr2O3 is just plain Chromium (III) oxide right?
 
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  • #2
Yes, that's it!
 
  • #3
The oxygens in CrO3 and Cr2O3 each have a formal charge of -2.

Neither of these is chromic acid.
 
  • #4
CrO3 is Chromium (VI) Oxide or Chromic Anhydride, as if we add water in it, it forms Chromic Acid, which is H2CrO4
 
  • #5
AGNuke said:
CrO3 is Chromium (VI) Oxide or Chromic Anhydride, as if we add water in it, it forms Chromic Acid, which is H2CrO4

The equilibrium of aqueous chromium trioxide lies far to the reactants side. Are you saying that aqueous chromic acid contains significant OH-?
 
  • #6
I don't get what you meant. I consulted my teacher and he said that CrO3 is an acidic oxide, thus it can also be referred to as acidic anhydride.

He also mentioned that H2CrO4 is a strong acid, can be considered as an analogue to Sulphuric acid. I can't get what you meant from equilibrium.

See This : Chromium Trioxide
 
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FAQ: Confused about the nomenclature of this compound (CrO3)

1. What is the chemical formula for CrO3?

The chemical formula for CrO3 is chromium trioxide. It is represented by one chromium atom and three oxygen atoms, giving it a chemical formula of CrO3.

2. Is CrO3 an ionic or covalent compound?

CrO3 is a covalent compound because it is formed by the sharing of electrons between the chromium and oxygen atoms. Ionic compounds are formed by the transfer of electrons between atoms.

3. What is the common name for CrO3?

The common name for CrO3 is chromic acid. This name is often used in older literature and may still be used in some industrial settings.

4. How does CrO3 behave in aqueous solutions?

In aqueous solutions, CrO3 behaves as a strong oxidizing agent. It readily reacts with water to form chromic acid, which can then further react with other substances.

5. Is CrO3 toxic?

Yes, CrO3 is considered to be toxic and can cause harm if ingested, inhaled, or comes into contact with the skin. It is important to handle this compound with caution and follow proper safety protocols.

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