How is bromine represented and what is the molecular weight of bromine?

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Bromine molecular weight is generally referred to:Relative to the molecular mass of the selling bridge, the relative molecular mass of bromine is.

Bromine is a red fuming liquid, soluble in water, atomic number.

For thirty-five, bromine element.

In nature, like other halogens, there is no elemental state of existence, bromine molecules are volatile red-black liquids at standard temperature and pressure, with activity between chlorine and iodine, pure bromine is also known as bromine.

Bromine vapor is corrosive and also toxic.

Properties of bromineBromine is chemically reactive, located between chlorine and iodine, and can react with almost all elements to form corresponding compounds. Except for ***, bromine can be combined with all metals and release a large amount of heat. The affinity with hydrogen is very strong, similar to chlorine but slightly weaker, and it can cause combustion when mixed with organic matter.

Soluble in alcohol, ether, potassium bromide.

solutions, alkalis and carbon disulfide.

Slightly soluble in water. The above content reference: Answer Encyclopedia - Bromine.

The industrial production of bromine is a dilute solution of bromine obtained by introducing chlorine gas into seawater. Sodium carbonate is then added to give sodium bromate and sodium bromide. After this solution is concentrated, it is acidified with sulfuric acid to obtain bromine element.

The chemical equation is.

2Nabr + Cl2 = 2NaCl + Bri2 (bromide in seawater is denoted by Nabr).

3br2 + 3na2co3 = nabro3 + 5nabr + 3co2↑

nabro3 + 5nabr + 3h2so4 = 3na2so4 + 3h2o + 3br2

The ionic equation is.

2br- +cl2 = 2cl- +br2

3br2 + 3co3 2- = bro3- +5br- +3co2↑

bro3- +5br- +6h+ = 3h2o + 3br2

There are many feasible methods for the preparation of bromine in the laboratory.

It can be reacted with mnO2 with HBR or sulfuric acidified NaBR (KBR).

4hbr + mno2 = mnbr2 + 2h2o + br2

2nabr + 2h2so4 + mno2 = na2so4 + mnso4 + 2h2o + br2

Both of the above equations are ion equations.

4h+ +2br- +mno2 = mn2+ +2h2o + br2

Chlorine gas is introduced into the bromide solution to form bromine.

2nabr + cl2 = 2nacl + br2

2br- +cl2 = 2cl- +br2

Sodium bromate (potassium) can also be reacted with sodium bromide (potassium) in an acidic solution.

nabro3 + 5nabr + 3h2so4 = 3na2so4 + 3h2o + 3br2

bro3- +5br- +6h+ = 3h2o + 3br2

Sodium bromide (potassium) solids are coheated with manganese dioxide in concentrated sulfuric acid to form bromine.

2nabr + 2h2so4 + mno2 = na2so4 + mnso4 + 2h2o + br2

The reaction takes place in concentrated sulfuric acid and cannot be broken down into ionic equations.

Concentrated sulfuric acid can be replaced with concentrated phosphoric acid.

2br- +cl2 = 2cl- +br2

This is enough in high school chemistry!

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Related Extension: Specifically, Bromine Oxide (Br) Bromine Oxide refers to the chemical process in which bromine atoms react with oxygen (O2) to form bromine oxide (Bro). Bromine oxide reaction can occur at room temperature, but at a slower rate.

It is often necessary to increase the temperature or use a catalyst to accelerate the reaction rate. As an important oxidizing agent, bromine oxide is widely used in many chemical reactions and industrial processes. <>

Bromine ion (br-) bromine ion is a negatively charged ion formed by the loss of one electron by the bromine atom (br). Bromine ions can be obtained by ionization of a single bromine atom or by dissolving bromide (e.g., bromine chloride) in water. Bromine ions have various qualities and uses in chemical reactions.

For example, in organic synthesis, bromide ions can be used as electrophiles and catalysts. <>

<> Bromine oxide and bromine ion equations.

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The equation for bromine oxide and bromide ions is the equation for oxygen-lead mode bromine: the equation for the bromide ion of 2 br + o2 ->2 bromo: the formula for the bromide ion of 2 bra - >br2 + 2ea-<>

<> related extensions: Specifically, bromine oxide (br) bromine oxide is a chemical process in which the bromine atom reacts with oxygen (O2) to form bromine oxide (bromo). Bromine oxide reaction can occur at room temperature, but at a slower rate.

It is often necessary to increase the temperature or use a catalyst to accelerate the reaction rate. As an important oxidizing agent, bromine oxide is widely used in many chemical reactions and industrial processes. <>

Bromine ion (br-) bromine ion is a negatively charged ion formed by the loss of one electron by the bromine atom (br). Bromine ions can be obtained by ionization of a single bromine atom or by dissolving bromide (e.g., bromine chloride) in water. Bromine ions have various qualities and uses in chemical reactions.

For example, in organic synthesis, bromide ions can be used as electrophiles and catalysts. <>

The molecular weight of bromine is as follows:Bromine is a chemical element with atomic number 35 and element symbol BR. Bromine is a halogen that is located in period 4, group a in the periodic table.

Bromine is a volatile non-metallic element that is soluble in water, as well as in ethanol and ether. Bromine is liquid at high circular standard temperature and pressure and its density is.

The molecular weight of bromine is. Molecular weight refers to the sum of the atomic weights of all the atoms in a chemical substance. The atomic weight is based on the standard of 1 12 of the atomic mass of a carbon-12 atom, and the value obtained by comparing the actual mass of other atoms with this standard is the relative atomic mass of the atom.

Therefore, the molecular weight of bromine can be calculated from its atomic weight and the sum of atomic weights.

The chemical formula of bromine is Br2.

The chemical formula of bromine is Br2, atomic number 35, and it is located in the 4th period, group a in the periodic table of chemical elements, and is one of the halogen group elements. The bromine molecule is a volatile red-black liquid at standard temperature and pressure, with activity between chlorine and iodine.

Pure bromine is also known as bromine. Bromine vapor is corrosive and toxic. Bromine and its compounds can be used as flame retardants, water purifiers, pesticides, dyes, and more.

Red syrup, which was once a commonly used disinfectant, contains bromine and mercury. In photography, bromine and iodine with silver compounds play the role of photoreceptors.

Bromine leakage emergency measures.

Quickly evacuate the personnel in the leakage contaminated area to the safe area, and immediately isolate them, 150m in the case of small leaks, and 300m in the case of large leaks, and strictly restrict access and access. It is recommended that emergency responders wear self-contained positive pressure respirators and anti-acid and alkali overalls. Do not come into direct contact with spills.

Cut off the source of the leak as much as possible. Prevent the flow into restricted spaces such as sewers and drainage ditches.

Small leaks: Neutralize with soda ash. It can also be rinsed with a large amount of water, diluted with washing water and put into the wastewater system.

Massive leakage: Construct embankments or dig pits to contain them. Cover with foam to reduce vapor hazards. Spray water cools and dilutes steam. Transfer by pump to a tanker or special collector** or transport to a waste disposal site.

The molecular formula of bromine is Br2, which is present at standard temperature and pressureVolatileof red-black liquid, with activity between chlorine and iodine.

br This is the chemical formula of the bromine element.

You didn't specify which compound of bromine it was.

The elemental elements of the halogen group are all diatomic molecules, from top to bottom are F2, Cl2, Br2, I2, brother, I call you to pay attention: 2 is the lower right corner mark.