What is the name of the compound with the formula (NH4)2CrO4
What is the formula for ammonium sulfite
The Correct Answer and Explanation is :
The compound with the formula ((NH_4)_2CrO_4) is called ammonium chromate. This is an inorganic compound made of ammonium cations ((NH_4^+)) and chromate anions ((CrO_4^{2-})).
Ammonium Chromate:
The structure of ammonium chromate consists of two ammonium ions and one chromate ion. The chromate ion is a polyatomic ion made up of a central chromium atom surrounded by four oxygen atoms in a tetrahedral arrangement. The chromium is in the +6 oxidation state, and the chromate ion carries a 2- negative charge.
Ammonium ions ((NH_4^+)) are the positively charged species and consist of a nitrogen atom surrounded by four hydrogen atoms arranged in a tetrahedral geometry. These ions are commonly found in a variety of salts.
Ammonium chromate is a yellow-orange crystalline solid, and it is commonly used in laboratory settings. However, due to the presence of chromium in its hexavalent state (Cr(VI)), it is highly toxic and poses a significant environmental and health hazard. Hexavalent chromium compounds are known carcinogens, and precautions should be taken when handling ammonium chromate.
Ammonium Sulfite:
The formula for ammonium sulfite is ((NH_4)_2SO_3). This compound consists of two ammonium ions ((NH_4^+)) and one sulfite ion ((SO_3^{2-})).
The sulfite ion consists of a sulfur atom bonded to three oxygen atoms, and it carries a 2- negative charge. The sulfur in sulfite compounds is in the +4 oxidation state. The sulfite ion can participate in a variety of reactions, especially in the context of redox chemistry.
Ammonium sulfite is typically encountered in aqueous solutions, where it behaves as a source of sulfite ions. It is less commonly encountered in pure form, and it is used in various chemical processes, including as a reducing agent. When exposed to air, ammonium sulfite can decompose into ammonium bisulfite and release sulfur dioxide, a gas known for its pungent odor.
In summary:
- Ammonium Chromate: ((NH_4)_2CrO_4)
- Ammonium Sulfite: ((NH_4)_2SO_3)