Characteristics of chlorine
What are 5 characteristics of chlorine?
Properties: Chlorine has a melting point of -100.98°C, boiling point of -34.6°C, density of 3.214 g/l, specific gravity of 1.56 (-33.6°C), with a valence of 1, 3, 5, or 7. Chlorine is a member of the halogen group of elements and directly combines with almost all of the other elements.
What are 10 facts about chlorine?
Fast Facts: Chlorine
- Symbol: Cl.
- Atomic Number: 17.
- Appearance: Greenish-yellow gas.
- Atomic Weight: 35.45.
- Group: Group 17 (Halogen)
- Period: Period 3.
- Electron Configuration: [Ne] 3s2 3p5
- Discovery: Carl Wilhelm Scheele (1774)
What are 3 uses for chlorine?
Chlorine has a variety of uses. It is used to disinfect water and is part of the sanitation process for sewage and industrial waste. During the production of paper and cloth, chlorine is used as a bleaching agent. It is also used in cleaning products, including household bleach which is chlorine dissolved in water.
What is the importance of chlorine?
Chlorine kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water. It is also used to make hundreds of consumer products from paper to paints, and from textiles to insecticides. About 20% of chlorine produced is used to make PVC.
What are three chemical properties of chlorine?
Chemical properties of chlorine – Health effects of chlorine – Environmental effects of chlorine
| Atomic number | 17 |
|---|---|
| Electronegativity according to Pauling | 3.0 |
| Density | 3.21*10 –3 g.cm –3 at 20 °C |
| Melting point | -101 °C |
| Boiling point | -34.6 °C |
Is chlorine basic or acidic?
Chlorine bleach is a base and is especially good at removing stains and dyes from clothes as well as disinfecting.
What is chlorine made of?
Most chlorine is manufactured electrolytically by the diaphragm, membrane, or mercury cell process. In each process, a salt solution (sodium or potassium chloride) is electrolyzed by the action of direct electric current which converts chloride ions to elemental chlorine.
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Chlorine Manufacture.
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Chlorine Manufacture.
| Chlorine Production | |
|---|---|
| Mexico | 0.5 |
How much chlorine is in the earth?
It constitutes 0.017 percent of Earth’s crust. Natural chlorine is a mixture of two stable isotopes: chlorine-35 (75.53 percent) and chlorine-37 (24.47 percent). The most common compound of chlorine is sodium chloride, which is found in nature as crystalline rock salt, often discoloured by impurities.
What is chlorine made from?
Chlorine can be manufactured by the electrolysis of a sodium chloride solution (brine), which is known as the Chloralkali process. The production of chlorine results in the co-products caustic soda (sodium hydroxide, NaOH) and hydrogen gas (H2). These two products, as well as chlorine itself, are highly reactive.
Why is chlorine harmful?
Breathing high levels of chlorine causes fluid build-up in the lungs, a condition known as pulmonary edema. The development of pulmonary edema may be delayed for several hours after exposure to chlorine. Contact with compressed liquid chlorine may cause frostbite of the skin and eyes.
How did chlorine get its name?
Carl Wilhem Scheele, a Swedish pharmacist, first described the greenish yellow gas in 1774 after dropping hydrochloric acid onto manganese dioxide. Sir Humphry Davy recognized the gas as an element in 1810 and named it based on the Greek word for its color, khloros. Chlorine was by this time already in use.
Where chlorine is found?
Chlorine can be found in abundance in both the Earth’s crust and in ocean water. In the ocean, chlorine is found as part of the compound sodium chloride (NaCl), also known as table salt. In the Earth’s crust, the most common minerals containing chlorine include halite (NaCl), carnallite, and sylvite (KCl).
Does chlorine react with water?
Chlorine will react in water to form hypochlorous acid, which can then dissociate into hydrogen and hypochlorite ions, according to Eqn (1). This reaction is very important, as the disinfecting power of HOCl, hypochlorous acid, is about 40–80 times that of OCl−, hypochlorite.
Is chlorine acidic or basic?
Chlorine bleach is a base and is especially good at removing stains and dyes from clothes as well as disinfecting.
What was chlorine first used for?
Chlorine was first used in the United States as a major disinfectant in 1908 in Jersey City, New Jersey.
What is chlorine classified?
Chlorine is a chemical element with symbol Cl and atomic number 17. Classified as a halogen, Chlorine is a gas at room temperature. 17.
Is chlorine naturally in water?
Chlorine and Chloride Defined
Highly reactive and a powerful oxidizing agent, it is almost never found free in nature. Most chlorine is commercially produced. It is best known for its use in purifying water and as a component of cleaning products.
What Colour is chlorine water?
pale yellow-green
Teaching notes
| Colour after shaking with hydrocarbon solvent | |
|---|---|
| Chlorine water | Aqueous layer: pale yellow-green to colourless Hydrocarbon layer: colourless to pale yellow-green |
| Bromine water | Aqueous layer: yellow-orange to colourless Hydrocarbon layer: colourless to pale yellow-orange |
Is chlorine heavier than water?
As a liquid, chlorine is amber colored and is 1.44 times heavier than water.
Is chlorine an acid?
For example, chlorine gas and trichlor are very acidic products, meaning they have a very low pH and tend to bring the pH of the pool down.
Does chlorine have taste?
The intensity of the chlorine taste and smell typically depends on the distance the public water source is from your household (i.e., the closer your house is to the water treatment plant, the stronger the chlorine taste).