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-   -   Stain removal using Ammonia or Vinegar (http://classroom.all-science-fair-projects.com/forum/showthread.php?t=1815)

nziegler 04-04-2006 05:29 PM

Stain removal using Ammonia or Vinegar
 
I have heard that ammonia and vinegar (not combined) are good household products for removing certain kinds of stains. For example, ammonia on catsup, vinegar on cofee, ammonia on blood. I am wondering if there is an interesting experiment that can be used as a 6th grade science project around this topic. Do these things work because they are neutralizing acids and alkalis, or is there no relation to this process? Help?

dreamerofeternity 04-05-2006 08:15 AM

How about this: Does the strength of an acid or base affect the ability of it to clean stains? So choose a type of stain, be it blood, coffee, ketchup, or all. Then, for each type of stain, use a strong acid or a strong base. Like HCl is a strong acid, and vinegar is a weak acid. So for a stain caused by 10mL of coffee, pour, let's say 20mL of HCl. Then on another stain caused by 10mL of coffee, pour 20mL of vinegar. Therefore, you're answering the question of whether it is the ability of vinegar and ammonia to neutralize that removes the stains, or is it something else.

Good luck!

AshleyakaAngel 04-12-2006 05:32 AM

I can't help you
 
I am in need of help with my science project myself so it may be hard but you'll get it

AshleyakaAngel 04-12-2006 05:33 AM

Quote:

Originally Posted by AshleyakaAngel
I am in need of help with my science project myself so it may be hard but you'll get it

ok well e-mail back Holla

brainygirl 04-14-2006 03:48 PM

This might help!!!!!!!!
 
Hi Brainygirl I need help on finding out all the info about this word:
phenolphthalein. If you find out what it is please help me!


Well AshleyakaAngel , you can find info in that site :
[url]www.http://en.wikipedia.org/wiki/Phenolphthalein[/url]

Mad Scientist 04-14-2006 07:07 PM

Science project encyclopedia
 
Alternatively, you can check the science project enyclopedia by following the links at the top of this page. :angel:

dreamerofeternity 04-16-2006 03:13 PM

Quote:

Originally Posted by brainygirl
Hi Brainygirl I need help on finding out all the info about this word:
phenolphthalein. If you find out what it is please help me!


Well AshleyakaAngel , you can find info in that site :
[url]www.http://en.wikipedia.org/wiki/Phenolphthalein[/url]

phenolphthalein is a acid-base indicator. In the presence of a base, it is purple/pink (more like magenta.) When it's neutral or acid, it is colorless.

So it is useful in titrations when you want to find the point when an acid becomes abase or vice versa.


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