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Another carbon-based structure, with properties very much based on that structure, is the Ethylene Diamine Tetra Acetate anion (EDTA). EDTA consists of four acetate groups bonded to two amine groups, further bonded with both carbon atoms of an ethane base structure.
The EDTA molecule has the ability to wrap around and form coordinate covalent bonds with hard water cations such as calcium, magnesium and iron. This makes EDTA a very effective compound for the removal of hard water ions. Additionally, a standardized solution of EDTA can be used to determine the total hardness of a hard water sample, with ease and accuracy.
EDTA is said to be a chelating agent because of its claw-like appearance as it wraps around and captures a hard water ion with its multiple bonding atoms. A diagram depicting the capture of a calcium ion by EDTA is shown below (The anion of Na4EDTA is shown.).
The number of "available" acetate charged oxygens vary with pH of the solution. A pH above 10 will consist of the tetradendrite structure shown above.
So there you have it: Yet another example of Organic molecule structure resulting in specific compound properties!
As always, thank you for reading!
A Publication of http://ExcellenceInLearning.biz
Another carbon-based structure, with properties very much based on that structure, is the Ethylene Diamine Tetra Acetate anion (EDTA). EDTA consists of four acetate groups bonded to two amine groups, further bonded with both carbon atoms of an ethane base structure.
The EDTA molecule has the ability to wrap around and form coordinate covalent bonds with hard water cations such as calcium, magnesium and iron. This makes EDTA a very effective compound for the removal of hard water ions. Additionally, a standardized solution of EDTA can be used to determine the total hardness of a hard water sample, with ease and accuracy.
EDTA is said to be a chelating agent because of its claw-like appearance as it wraps around and captures a hard water ion with its multiple bonding atoms. A diagram depicting the capture of a calcium ion by EDTA is shown below (The anion of Na4EDTA is shown.).
The number of "available" acetate charged oxygens vary with pH of the solution. A pH above 10 will consist of the tetradendrite structure shown above.
So there you have it: Yet another example of Organic molecule structure resulting in specific compound properties!
As always, thank you for reading!
A Publication of http://ExcellenceInLearning.biz
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