- Definition of H2Cr2O7
H2Cr2O7, also known as dichromic acid, is a complex chemical compound containing two Chromium atoms, 2 Hydrogen atoms, and 7 Oxygen atoms. In English, it is called Dichromic acid. The molar mass of H2Cr2O7 is 294.185 g/mol. The structure of this compound includes two Chromium atoms linked together by a single covalent bond, with each Chromium atom connected to 4 Oxygen atoms through double covalent bonds and one Hydrogen atom. H2Cr2O7 produces ions when it decomposes in water, producing H+ ions and Cr2O7 2- ions.
- Properties of H2Cr2O7
2.1 Physical Properties of H2Cr2O7: H2Cr2O7 is a solid, orange-red compound without a distinctive smell. It has a very low pH when decomposed in water, indicating its strong acidity.
2.2 Chemical Properties of H2Cr2O7: H2Cr2O7 is a strong oxidant, capable of oxidizing many metals and non-metals.
- Common Chemical Equations of H2Cr2O7:
H2Cr2O7 participates in many oxidation-reduction reactions. A few examples include:
Metal Reaction: H2Cr2O7 can react with iron to produce Fe2(SO4)3 and Cr2(SO4)3.
Acid Reaction: H2Cr2O7 can react with sulfuric acid to produce H2SO4 and Cr2(SO4)3.
- Synthesis of H2Cr2O7
4.1 Laboratory Synthesis of H2Cr2O7: H2Cr2O7 can be synthesized from K2Cr2O7 and sulfuric acid according to the equation K2Cr2O7 + H2SO4 -> H2Cr2O7 + K2SO4.
4.2 Industrial Synthesis of H2Cr2O7: On an industrial scale, H2Cr2O7 is typically produced from Chromium powder by oxidation with a mixture of sulfuric and nitric acids.