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In the presence of water what happens to anhydrous cobalt chloride?
Wiki User
∙ 15y ago
The colour become initially purple and after (with more humidity) pink.
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoThe dry cobalt (II) chloride [CoCl2] is blue; after the contact with water the substance become [CoCl2].2H2O - purple colour; with more water we obtain [CoCl2].6H2O - pink colour.
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What color is associated with the hydrated form of cobalt chloride?
cobalt chlorideCompound that exists in two forms: the hydrated salt (CoCl2.6H2O), which is pink, and the anhydrous salt, which is blue. The anhydrous form is used as an indicator because it turns pink if water is present. When the hydrated salt is gently heated the blue anhydrous salt is reformedcobalt chlorideCompound that exists in two forms: the hydrated salt (CoCl2.6H2O), which is pink, and the anhydrous salt, which is blue. The anhydrous form is used as an indicator because it turns pink if water is present. When the hydrated salt is gently heated the blue anhydrous salt is reformedCobalt chloride in simple terms.When the cobalt chloride has no water (ANHYDROUS) it is BLUE. when water is present then the anhydrous cobalt chloride becomes HYDRATED cobalt chloride and it is PINK.
What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
Cobalt chloride will give a positive test for?
Cobalt chloride is used to test for the presence of water. If there is no water present it is blue, if water is present it goes pink.
What is the formula for cobalt III nitrite?
Cobalt II has a +2 charge and is written Co2+. Nitrite has a -1 charge and is written NO2-. Therefore, you must have two nitrite anions for every Cobalt II. It is written... Co(NO2)2
Is cobalt chloride the same with cobalt dichloride?
Cobalt (I) chloride = Cobalt monochloride = CoCl Cobalt (II) chloride = Cobalt dichloride = CoCl2 Cobalt (III) chloride = Cobalt trichloride = CoCl3
If water evaporates then cobalt chloride near or above the water will turn what color?
The anhydrous cobalt chloride is blue.
What color is associated with the hydrated form of cobalt chloride?
cobalt chlorideCompound that exists in two forms: the hydrated salt (CoCl2.6H2O), which is pink, and the anhydrous salt, which is blue. The anhydrous form is used as an indicator because it turns pink if water is present. When the hydrated salt is gently heated the blue anhydrous salt is reformedcobalt chlorideCompound that exists in two forms: the hydrated salt (CoCl2.6H2O), which is pink, and the anhydrous salt, which is blue. The anhydrous form is used as an indicator because it turns pink if water is present. When the hydrated salt is gently heated the blue anhydrous salt is reformedCobalt chloride in simple terms.When the cobalt chloride has no water (ANHYDROUS) it is BLUE. when water is present then the anhydrous cobalt chloride becomes HYDRATED cobalt chloride and it is PINK.
What color will a cobalt chloride paper turn into when there is water vapor?
The colour of cobalt chloride paper is BLUE when NO WATER is present.When WATER is present it is PINK.
C0cl2 and water is it a physical or chemical change?
The hydration of anhydrous cobalt chloride is a chemical change.
What is meant by the word anhydrous when applied to a chemical?
Anhydrous simply means 'without water'. The opposite is a hydrated substance, in which salt crystals contain water as an integral part of the crystal. For example, anhydrous cobalt(II) chloride, CoCl2, is a blue powder. Add water and you form cobalt(II) chloride hexahydrate, CoCl2.6H2O, which is a pink colour. Anhydrous cobalt chloride can be used to test for the presence of water because of this dramatic colour change. In addition, hydrated copper(II) sulfate, CuSO4.5H2O, forms bright blue crystals. Heating them drives off the water of crystallisation and anhydrous CuSO4, a grey/white powder, is formed. Adding water will reform a blue solution of the hydrated salt.
What is cobalt chloride paper in simple terms?
Cobalt chloride paper is absorbent paper which has been soaked in cobalt chloride solution and allowed to dry. It is a convenient way to use cobalt chloride as a test for the presence of water. When cobalt chloride is anhydrous, that is completely without water, it is blue, but when there is water present, either in solution or in the solid, it is pink. To use cobalt chloride paper it is heated to drive off the water present, until it turns blue. You then dip it into the liquid you want to test. Water,or any liquid such as milk which contains water, will turn the paper pink (it may look white if there's not much cobalt chloride on it). Other liquids, e.g. gasoline, will have no effect.
Where can you buy cobalt chloride paper?
Cobalt Chloride paper may be purchased online however it was recently found to be a carcinogen. A safer test for H2O is Anhydrous Copper Sulfate. It is made by heating copper sulfate in a test tube over a Bunsen burner until it goes white. It then turns blue in the presence of H2O. I am not aware of an Anhydrous Copper Sulfate paper, however one may exist.
Will damp cobalt chloride turn back blue once dried?
Solid Cobalt chloride crystals are pink when hydrated with water. If you heat the crystal, the water of crystallisation in the crystals will evaporate, leaving you with solid anhydrous cobalt chloride crystals which are blue in colour.
Which liquid that boils at 104 degrees turns blue cobalt chloride pink?
The anhydrous cobalt chloride (blue) become purple after the contact with water and transformation in the CoCl2.6H2O.But the boiling point of water is 100 oC.
Cobalt chloride will give a positive test for?
Cobalt chloride is used to test for the presence of water. If there is no water present it is blue, if water is present it goes pink.
How is cobalt chloride used to find out if water is present?
The cobalt chloride changes colour in the presence of water because of the different amount of protons and electrons that are present.
What is difference between hydrogen chloride and anhydrous hydrogen chloride?
uhm i typed it in and found this:CoCl2.6H2O is the hexahydrate of anhydrous Cobalt Chloride (anhydrous meaning is without water).pretty much anhydydrous is without water that is the difference (the prefix A- is "without" or "not") and the formula one does have water.it was a question previously asked on wikianswers, so im pretty confident about it.CoCl2.6H2O is the hexahydrate of anhydrous CoCl2 (anhydrous meaning is without water).
