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Topic: SOAP (sodium palmitate)  (Read 2826 times)

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Offline martina86

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SOAP (sodium palmitate)
« on: February 08, 2014, 02:35:12 PM »
Hay, can you tell me what is the function of sodium ion in soap? I know that carbohydrate chain reacts with grease and that carboxylate ion reacts with water, but what does the Na-ion does?

Thank you :-)
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Offline zsinger

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Re: SOAP (sodium palmitate)
« Reply #1 on: February 08, 2014, 02:37:06 PM »
Counter Ion.
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Offline martina86

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Re: SOAP (sodium palmitate)
« Reply #2 on: February 08, 2014, 03:03:49 PM »
so, simply speaking it increases the solubility and gives the anion the opposite charge, so that the molecule is neutral?

(exceuse me for my poor english :-) )
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Offline Borek

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Re: SOAP (sodium palmitate)
« Reply #3 on: February 08, 2014, 04:03:04 PM »
In a way. Otherwise you will have an uncharged molecule of acid, with much lower solubility.
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Offline PhDoc

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Re: SOAP (sodium palmitate)
« Reply #4 on: February 08, 2014, 04:45:07 PM »
Please look up the term "micelle." How many soaps contain carbohydrates? What's the typical functional group in a soap? How about a detergent?
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