I like to get some information about Zinc Hydroxide [Zn(OH)2] & Cadmium Chloride [CdCl2].?
I want to find professional information about Zinc Hydroxide and Cadmium Chloride such as Molecular Radius,solvent in water and more. [Thank you.]
Answer:
ZINC HYDROXIDE:
------------------------------...
Zinc hydroxide (Zn(OH)2) is an inorganic chemical compound.
It is unusual in that, like zinc oxide, it is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of sodium hydroxide.
It can be prepared by adding sodium hydroxide solution, but not in excess, to a solution of any zinc salt. A white precipitate will be seen: Zn2+ + 2OH- → Zn(OH)2.
If excess sodium hydroxide is added, the precipitate of zinc hydroxide will dissolve, forming a colourless solution of sodium zincate: Zn(OH)2 + 2OH- → Zn(OH)42-. This property can be used as a test for zinc ions in solution, but it is not exclusive, since aluminium and lead compounds behave in a very similar manner.
One major use is as an absorbent in surgical dressings.
General
Other names
Molecular formula Zn(OH)2
Molar mass 99.39 g/mol
Appearance white powder
CAS number [20427-58-1]
Properties
Density and phase 3.053 g/cm3, solid
Solubility in water slightly soluble
Melting point 125°C (decomposition)
Boiling point ?
-----------------------------
CADMIUM CHLORIDE:
Cadmium chloride is a white crystalline compound of cadmium and chlorine, with the formula CdCl2. It is a hygroscopic solid which is highly soluble in water and slightly soluble in alcohol. Although it is considered to be ionic, it has considerable covalent character to its bonding. The crystal structure of cadmium chloride (described below), composed of two-dimensional layers of ions, is often used as a reference for describing other crystal structures.
General
Molecular formula CdCl2
Molar mass 183.316 g/mol
Appearance white solid, hygroscopic
CAS number 10108-64-2
Properties
Density and phase 4.08 g/cm3, solid
Solubility in water 140 g/100 ml (20 °C)
Solubility in methanol 1.7 g/100 ml
Solubility in acetone insoluble
Melting point 564 °C
Boiling point 960 °C
Structure
Crystal structure rhombohedral
Hazards
MSDS External MSDS
EU classification Highly toxic (T+)
Carc. Cat. 2
Muta. Cat. 2
Repr. Cat. 2
Dangerous for
the environment (N)
R-phrases R45, R46, R60, R61, R25,
R26, R48/23/25, R50/53
S-phrases S53, S45, S60, S61
Flash point non-flammable
Supplementary data page
Structure and
properties n, εr, etc.
Thermodynamic
data Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions Cadmium fluoride
Cadmium bromide
Cadmium iodide
Other cations Zinc chloride
Mercury(II) chloride
-----------------------------
HOPE THIS HELPS
to know more abt them with pictures
pls go to the below link
http://www.answers.com/cadmium+chloride?...
both of these are easily soluble in water at ordinary temperature. zinc hydrooxide is more soluble. ZINcHYDROXIDE IS USED in agriculture field in order to improve the Zn in crust while it is also used by the white washers to dry the plaster of paris quickly. in labes it is used as a base. CdCl2 contains a heavy metal , thats why its use as a salt in living things is dangerous. both of these are white in colour. for more information you can visit the site:
www.webelements.com
Zinc hydroxide (Zn(OH)2) is an inorganic chemical compound.
It is unusual in that, like zinc oxide, it is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of sodium hydroxide.It is slightly soluble in water.It has CAS number [20427-58-1].
It can be prepared by adding sodium hydroxide solution, but not in excess, to a solution of any zinc salt. A white precipitate will be seen: Zn2+ + 2OH- → Zn(OH)2.
If excess sodium hydroxide is added, the precipitate of zinc hydroxide will dissolve, forming a colourless solution of sodium zincate: Zn(OH)2 + 2OH- → Zn(OH)42-. This property can be used as a test for zinc ions in solution, but it is not exclusive, since aluminium and lead compounds behave in a very similar manner.
One major use is as an absorbent in surgical dressings.
Cadmium chloride is a white crystalline compound of cadmium and chlorine, with the formula CdCl2. It is a hygroscopic solid which is highly soluble in water of about 140 g/100 ml (20 °C) and slightly soluble in alcohol. Although it is considered to be ionic, it has considerable covalent character to its bonding. It has CAS number 10108-64-2. The crystal structure of cadmium chloride (described below), composed of two-dimensional layers of ions, is often used as a reference for describing other crystal structures.
Anhydrous cadmium chloride can be prepared by the action of anhydrous chlorine or hydrogen chloride gas on heated cadmium metal.
Cd(s) + 2 HCl(g) → CdCl2(s) + H2(g)
Hydrochloric acid may be used to make hydrated CdCl2 from the metal, or alternatively from cadmium oxide or cadmium carbonate
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Answer:
ZINC HYDROXIDE:
------------------------------...
Zinc hydroxide (Zn(OH)2) is an inorganic chemical compound.
It is unusual in that, like zinc oxide, it is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of sodium hydroxide.
It can be prepared by adding sodium hydroxide solution, but not in excess, to a solution of any zinc salt. A white precipitate will be seen: Zn2+ + 2OH- → Zn(OH)2.
If excess sodium hydroxide is added, the precipitate of zinc hydroxide will dissolve, forming a colourless solution of sodium zincate: Zn(OH)2 + 2OH- → Zn(OH)42-. This property can be used as a test for zinc ions in solution, but it is not exclusive, since aluminium and lead compounds behave in a very similar manner.
One major use is as an absorbent in surgical dressings.
General
Other names
Molecular formula Zn(OH)2
Molar mass 99.39 g/mol
Appearance white powder
CAS number [20427-58-1]
Properties
Density and phase 3.053 g/cm3, solid
Solubility in water slightly soluble
Melting point 125°C (decomposition)
Boiling point ?
-----------------------------
CADMIUM CHLORIDE:
Cadmium chloride is a white crystalline compound of cadmium and chlorine, with the formula CdCl2. It is a hygroscopic solid which is highly soluble in water and slightly soluble in alcohol. Although it is considered to be ionic, it has considerable covalent character to its bonding. The crystal structure of cadmium chloride (described below), composed of two-dimensional layers of ions, is often used as a reference for describing other crystal structures.
General
Molecular formula CdCl2
Molar mass 183.316 g/mol
Appearance white solid, hygroscopic
CAS number 10108-64-2
Properties
Density and phase 4.08 g/cm3, solid
Solubility in water 140 g/100 ml (20 °C)
Solubility in methanol 1.7 g/100 ml
Solubility in acetone insoluble
Melting point 564 °C
Boiling point 960 °C
Structure
Crystal structure rhombohedral
Hazards
MSDS External MSDS
EU classification Highly toxic (T+)
Carc. Cat. 2
Muta. Cat. 2
Repr. Cat. 2
Dangerous for
the environment (N)
R-phrases R45, R46, R60, R61, R25,
R26, R48/23/25, R50/53
S-phrases S53, S45, S60, S61
Flash point non-flammable
Supplementary data page
Structure and
properties n, εr, etc.
Thermodynamic
data Phase behaviour
Solid, liquid, gas
Spectral data UV, IR, NMR, MS
Related compounds
Other anions Cadmium fluoride
Cadmium bromide
Cadmium iodide
Other cations Zinc chloride
Mercury(II) chloride
-----------------------------
HOPE THIS HELPS
to know more abt them with pictures
pls go to the below link
http://www.answers.com/cadmium+chloride?...
both of these are easily soluble in water at ordinary temperature. zinc hydrooxide is more soluble. ZINcHYDROXIDE IS USED in agriculture field in order to improve the Zn in crust while it is also used by the white washers to dry the plaster of paris quickly. in labes it is used as a base. CdCl2 contains a heavy metal , thats why its use as a salt in living things is dangerous. both of these are white in colour. for more information you can visit the site:
www.webelements.com
Zinc hydroxide (Zn(OH)2) is an inorganic chemical compound.
It is unusual in that, like zinc oxide, it is amphoteric. Thus it will dissolve readily in a dilute solution of a strong acid, such as HCl, and also in a solution of sodium hydroxide.It is slightly soluble in water.It has CAS number [20427-58-1].
It can be prepared by adding sodium hydroxide solution, but not in excess, to a solution of any zinc salt. A white precipitate will be seen: Zn2+ + 2OH- → Zn(OH)2.
If excess sodium hydroxide is added, the precipitate of zinc hydroxide will dissolve, forming a colourless solution of sodium zincate: Zn(OH)2 + 2OH- → Zn(OH)42-. This property can be used as a test for zinc ions in solution, but it is not exclusive, since aluminium and lead compounds behave in a very similar manner.
One major use is as an absorbent in surgical dressings.
Cadmium chloride is a white crystalline compound of cadmium and chlorine, with the formula CdCl2. It is a hygroscopic solid which is highly soluble in water of about 140 g/100 ml (20 °C) and slightly soluble in alcohol. Although it is considered to be ionic, it has considerable covalent character to its bonding. It has CAS number 10108-64-2. The crystal structure of cadmium chloride (described below), composed of two-dimensional layers of ions, is often used as a reference for describing other crystal structures.
Anhydrous cadmium chloride can be prepared by the action of anhydrous chlorine or hydrogen chloride gas on heated cadmium metal.
Cd(s) + 2 HCl(g) → CdCl2(s) + H2(g)
Hydrochloric acid may be used to make hydrated CdCl2 from the metal, or alternatively from cadmium oxide or cadmium carbonate
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