Table of Contents
Cobalt is somewhat of a reactive element. It combines with oxygen in the air, but does not catch on fire and burn unless it is in powder form. Cobalt has the ability to react with most acids to produce hydrogen gas. However cobalt does not react with water that is at room temperature.
Does cobalt react with other elements?
Cobalt is one of the three metals that are ferromagnetic at room temperature. It dissolves slowly in dilute mineral acids, does not combine directly with either hydrogen or nitrogen, but will combine, on heating, with carbon, phosphorus, or sulfur.
Is the element cobalt flammable?
* Cobalt is not combustible when in solid or bulk form. However, finely divided Cobalt is FLAMMABLE and will ignite spontaneously in air. * Use dolomite, sand, soda ash, dry powder or graphite powder for extinguishing a powdered metal fire.
What happens when you add water to cobalt?
If the chloride or cobalt concentrations increase, the equilibrium will also shift towards the blue anhydrous cobalt chloride. Add water, however, and the equilibrium will shift back towards the pink hydrated species.
What is the properties of cobalt?
Cobalt is a hard ferromagnetic, silver-white, hard, lustrous, brittle element. It is a member of group VIII of the periodic table. Like iron, it can be magnetized. It is similar to iron and nickel in its physical properties.
Does cobalt smell like oranges?
Looks Like: Cobalt is a hard, gray metal that looks much like iron and nickel. 2. Smell Like: In its pure form it smells like oranges.
Why is cobalt reactive?
Chemical Properties Cobalt is somewhat of a reactive element. It combines with oxygen in the air, but does not catch on fire and burn unless it is in powder form. Cobalt has the ability to react with most acids to produce hydrogen gas.
Can you be allergic to cobalt?
Symptoms. Allergic reactions to cobalt may include allergic contact dermatitis, though irritant dermatitis also occurs frequently. Erythema multiforme rashes may occur, as well as contact dermatitis caused by contact with airborne cobalt particles.
Can you touch cobalt?
Cobalt poisoning that occurs from constant contact with your skin will likely cause irritation and rashes that go away slowly. Swallowing a large amount of absorbable cobalt at one time is very rare and is likely not very dangerous. It may cause nausea and vomiting.
What happens when you burn cobalt?
Cobalt is a moderately reactive element. It combines slowly with oxygen in the air, but does not catch fire and burn unless it is in a powder form. It reacts with most acids to produce hydrogen gas. It does not react with water at room temperatures.
Why is cobalt pink?
The cobalt chloride changes color because the salt in the solution dissociates into ions. Cobalt ions are hydrated in the solution and have a pink color. This is because the chlorine ions force the water out of the water complex of cobalt.
What happens when you mix cocl2 and HCl?
Dissolving cobalt(II) chloride in water makes the pink hydrage. The addition of HCl forms a blue chloride complex.
Why is the cobalt solution purple?
This solution is purple because it has appreciable amounts of both the pink and blue ions.
Is cobalt attracted to magnets?
Ferromagnetic metals are strongly attracted by a magnetic force. The common ferromagnetic metals include iron, nickel, cobalt, gadolinium, dysprosium and alloys such as steel that also contain specific ferromagnetic metals such as iron or nickel.
What is Cobalts physical appearance?
Characteristics: Cobalt is a bluish-white, lustrous, hard, brittle metal. It is ferromagnetic. The metal is active chemically, forming many compounds.
Is cobalt toxic?
A deficiency of cobalt, which is very rare, is also potentially lethal, leading to pernicious anemia. Exposure to cobalt metal dust is most common in the fabrication of tungsten carbide. Another source is from wear and tear of certain metal-on-metal hip prostheses. Cobalt poisoning Specialty Toxicology.
What was cobalt named after?
The element cobalt’s name comes from the German word kobold, meaning goblin or evil spirit. It was named by miners in 16th century Saxony who thought they had found deposits of silver but had actually found cobalt arsenide. Cobalt (symbol Co and atomic number 27) is a transition metal.
What period is cobalt in?
Period 4 Group 9 Melting point Period 4 Boiling point Block d Density (g cm − 3 ) Atomic number 27 Relative atomic mass State at 20°C Solid Key isotopes.
Who discovered cobalt?
Georg Brandt.
Is cobalt a conductor or insulator?
Electrical Type of the elements Hydrogen N/A Conductor Cobalt Conductor Conductor Nickel Conductor Conductor Copper Conductor Conductor Zinc Conductor Conductor.
Is cobalt rare or common?
Cobalt is a rare element with a frequency in the Earth’s crust of 0,004 percent.
Does cobalt oxidize?
It is readily oxidized with water and oxygen to brown cobalt(III) hydroxide (Co(OH)3). At temperatures of 600–700 °C, CoO oxidizes to the blue cobalt(II,III) oxide (Co3O4), which has a spinel structure.
Can I take B12 if im allergic to cobalt?
The rash associated with cobalt allergy contact dermatitis can be treated with topical corticosteroids or systemic corticosteroids (oral versus injectable). However, cobalt allergy is best treated with avoidance of large doses of vitamin B12.
How does the body get rid of cobalt?
Cobalt is not an accumulating metal, meaning it is stored in the liver and processed out of the body through urine but not stored in the bones.
How common is cobalt allergy?
Cobalt allergy affects about 2% of the general population and can develop at any age, including in children. It shows a female predominance (2:1) and is commonly associated with atopic dermatitis. One study reported an increased prevalence of cobalt allergy in people with skin of colour.
Is cobalt toxicity reversible?
The symptoms and problems associated with long-term cobalt poisoning are rarely reversible. People who have such poisoning will likely have to take medicine for the rest of their life to control the symptoms.
Is cobalt in drinking water?
In most drinking water, cobalt levels are less than 1–2 ppb. For most people, food is the largest source of cobalt intake. The average person consumes about 11 micrograms of cobalt a day in their diet.
How common is cobalt poisoning?
Cobalt poisoning from hip prosthesis is rare but debilitating. It’s caused when the metal wears and introduces cobalt into the bloodstream. This is a known risk with metal-on-metal implants, but newer data are showing that it is also a risk with metal-on-polyethylene implants. According to Dr.
