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Definition of Br2
1.1 Names
1.1.1 Common name: Brom
1.1.2 English name: Bromine
1.2 Atomic mass: 79.904.
1.3 Molecular structure: Bromine is a diatomic molecule with the chemical formula of Br2.
1.4 Ion structure: Bromine can form bromide ion Br- when it receives an electron. -
Properties of Br2
2.1 Physical properties of Br2
State: Liquid at room temperature.
Color: Brownish-red.
Smell: Sharp, distinctive odor.
PH Level: Not applicable as bromine is neither a base nor an acid.
2.2 Chemical properties of Br2: Bromine reacts with many metals to form metal bromides. It can also burn in air to create bromine trioxide. -
Common chemical equations of Br2
Metal reaction: Br2 + 2Fe -> 2FeBr2
Acid reaction: Br2 + H2SO4 -> SO2 + 2HBr + O2
Non-metal reaction: Br2 + 3F2 -> 2BrF3
Reaction with salts: Br2 + 2NaCl -> 2NaBr + Cl2 -
Synthesis of Br2
4.1 Laboratory synthesis of Br2: Bromine can be synthesized by the reaction between manganese dioxide and hydrobromic acid.
4.2 Industrial synthesis of Br2: In the industry, bromine is produced by electrolysis of bromide salt solutions.