What is Ca2Cr2O7? Important knowledge about Ca2Cr2O7.

1. Definition of Ca₂Cr₂O₇

Ca₂Cr₂O₇ is the chemical formula of Calcium dichromate, a salt of Calcium and Dichromic acid.
1.1 Names
1.1.1 Common name: Calcium dichromate
1.1.2 English name: Calcium dichromate
1.2. Atomic structure: 2 Calcium atoms, 2 Chromium atoms, and 7 Oxygen atoms.
1.3. Atomic weight: Ca₂Cr₂O₇ has an atomic weight of 396.07 g/mol
1.3.1 Molecular structure: The molecule Ca₂Cr₂O₇ consists of 2 Ca atoms bonded to 2 Cr atoms through 2 Cr-O-Ca bonds. Each Cr atom is also bonded to 3 different Oxygen atoms.
1.4 Ion structure: Ca₂Cr₂O₇ ionizes into 2 Ca₂+ ions and 2 (Cr₂O₇)₂- ions.

2. Properties of Ca₂Cr₂O₇
   2.1 Physical properties of Ca₂Cr₂O₇
   State: Solid
   Color: Orange-red
   Odor: Odorless
   PH value: Ca₂Cr₂O₇ is an alkaline substance, with a pH > 7
   2.2 Chemical properties of Ca₂Cr₂O₇: Ca₂Cr₂O₇ has a strong oxidizing ability, and can react with many other substances.

3. Common chemical equation of Ca₂Cr₂O₇
   The reactions of Ca₂Cr₂O₇ with metals, acids, nonmetals, and salts need to be discussed in more detail because, depending on the specific conditions, Ca₂Cr₂O₇ can react differently.

4. Synthesis of Ca₂Cr₂O₇
   4.1 Laboratory synthesis of Ca₂Cr₂O₇: Ca₂Cr₂O₇ can be synthesized from the reaction between CaO and K₂Cr₂O₇.
   4.2 Industrial synthesis of Ca₂Cr₂O₇: In industry, Ca₂Cr₂O₇ is commonly produced from the treatment of Chromium ore with Sulfuric acid and Calcium.