Salts

Salts are ionic compounds that result from the neutralization reaction of an acid and a base.

Potassium permanganate (KMnO₄)

Potassium Permanganate consist of K⁺ and MnO₄^- ions.It dissolves in water to give intensely purple solutions, the evaporation of which leaves prismatic purplish-black glistening crystals.

Uses

• Disinfectant and water treatment
• an antiseptic
• disinfectant for the hands
• treatment for mild pompholyx, dermatitis, and fungal infections of the hands or feet.


• Biomedical uses
• used to treat gonorrhea in the past
• used to treat candidiasis
•  can be used to inactivate the poison strychnine. 
• Diagnostic pathology
• Pre-treated with potassium permanganate, to obliterate Congo red reactivity, now considered to be unreliable. 
• Organic synthesis
• as a reagent to form organic compounds
• significant amounts are required to form ascorbic acid, chloramphenicol, saccharin, isonicotinic acid, and pyrazinoic acid 
• Fruit preservation
• extend storage time of banana even at high temperatures.
• Survival kits
• potassium permanganate is included in survival kits: as a fire starter, water sterilizer and to create distress signals on snow

Interesting fact~

By adding Potassium permanganate, sucrose and sodium hydroxide can form a Chemical Chameleon!!

Potassium Ferricyanide (K₃[Fe(CN)₆])

It contains K⁺ and [Fe(CN)₆]^3- ions. It is soluble in water and shows a green-yellow colour after it is dissolved and in acid however, it is slightly soluble alcohol. It also has a monoclinic crystal structure, that is described by vectors of unequal length.

Uses

• Iron and copper toning.
• Oxidizing agent to remove silver from negatives and positives.
• Colour photographing to reduce size of colour dots.
• Reading of old manuscripts.
•   Harden of iron and steel, electroplating.
  

Cobalt(II) Chloride (CoCl₂)

            Anhydrous                     Hexahydrate 

Cobalt(II) chloride is an inorganic salt. Usually supplied as a hexahydrate, CoCl₂ 6H₂O. Common cobalt used in laboratories.

Cobalt(II) Chloride Anhydrous is sky blue in colour. Cobalt(II) Chloride Hexahydrate is mauve in colour.

Cobalt(II) Chloride gives a blue-green colour in flame.

Cobalt(II) Chloride consist of Co²⁺ and Cl^- ions.

Uses 

• Invincible ink.
• Used as chemical inducer of hypoxia-like responses(erythropoiesis)
•   Coating for computer memory storage devices.
  

Interesting fact!

When small amount of Cobalt Chloride is heated with a blow torch, it changes from red to blue colour.

 .::Sources::.

Wikipedia

http://en.wikipedia.org/wiki/Potassium_ferricyanide

http://en.wikipedia.org/wiki/Cobalt(II)_chloride

http://en.wikipedia.org/wiki/Salts

http://en.wikipedia.org/wiki/Potassium_permanganate

Google

https://www.google.com.sg/

Youtube

http://www.youtube.com/watch?v=QRSBchx81pg

http://www.youtube.com/watch?v=oC3FtY29FUs

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