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arooj1a2b3c arooj1a2b3c
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9 years ago Edited: 9 years ago, arooj1a2b3c
'm provided with unlabeled packets of sweeteners. Any chemicals I need are provided. I have only a microscope, a pipettor, a balance, a spectrophotometer,a hot plate, and a water bath. I know what substances are being tested and their ingredients.

Substance/ Ingredient
Sugar/ Sugar
SweetNLow/ saccharin, dextrose,
Splenda/ sucralose, maltodextrin, dextrose
Truvia/ Eryrthritol, natural flavor, rebiana
Bobos/ Lactose, aspartame

It's an intellectual exercise; I'm not actually supposed to do this in the lab. I have to describe a procedure to identify which substance is which. I'm having trouble figuring out what to test for. I know that to differentiate between sugar and sucralose I could do a Benedict's test, bu for the rest I'm confused.
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wrote...
#1
Educator
9 years ago
Quote from: arooj1a2b3c (9 years ago)
I have only a microscope, a pipettor, a balance, a spectrophotometer,a hot plate, and a water bath.

Only? Hmm....

I think the spectrophotometer as your main tool is the best bet because each one of these chemicals has a unique wavelength when suspended in water. See the attachment Downwards Arrow
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arooj1a2b3c Author
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9 years ago Edited: 9 years ago, arooj1a2b3c
So then how do I tell the difference between the other ones? Attached is what I typed up so far, but my instructors telling me that I need to look at the ingredients closer implying that something I did was flawed.
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