1/25/2012

Chemistry Classics: Acid/Base - Vinegar (Acetic Acid) and Baking Soda (Sodium Bicarbonate)

Chemistry Classics: Acid/Base - Vinegar (Acetic Acid) and Baking Soda (Sodium Bicarbonate)






In this video, which I made while bored on a Sunday (I still had a ton of homework that I didn't feel like doing), I mix Vinegar and Baking Soda in the classic reaction that has captivated millions! -BRIEF EXPLANATION- Vinegar is a very weak acid that's safe to sell in grocery stores. It is acetic acid (CH3COOH), a very strong acid when concentrated, diluted to just .833 molar concentration, or 5% by volume, for those new to chemistry. Baking soda is another household chemical - it is pure sodium bicarbonate (NaHCO3), which is cheap to make and has many good properties for cleaning and baking. Vinegar actually consists of aqueous ions, H+ and CH3COO-, which dissociate when solid acetic acid is diluted into pure water. Since there are water molecules in vinegar, when we put baking soda into the vinegar, it dissociates into ions as well: Na+ and HCO3-. The Na+ (sodium ion) and CH3COO- (acetate ion) are spectator ions in this reaction - in other words, they don't do anything, and they'll still be there after the reaction is all done. The reaction itself is actually two reactions. The first is an acid/base reaction. The H+ from the vinegar and the HCO3- from the baking soda form carbonic acid in the first step: H+ + HCO3- → H2CO3 In the second step, the H2CO3 we've created immediately (like...really quickly!) decomposes into water (H2O) and carbon dioxide gas (CO2): H2CO3 → H2O(l) + CO2(g) The gas formed produces nice, fizzy bubbles in the H2O that's also getting formed ...

GERD — Comprehensive overview covers symptoms, treatment, diet issues of this acid reflux disease.

RE: Thunderf00t DMCAed in William Lane Craigs Name






Here's the PM I received from drcraigvideos (aka John Leonard) regarding thunderf00t's video "Thunderf00t DMCAed in William Lane Craigs Name": 1/24/2012 Hi there, These are my reactions to his "Thunderf00t DMCAed in William Lane Craigs Name" video: 1. Boy, what a cry baby! 2. Yup, thunderf00t's reputation as a liar has been confirmed yet again. Anyway, everybody knows thunderf00t is a liar. 3. thunderf00t doesn't seem to realize that "fair use" doesn't mean you can take anybodies film footage and upload them for your so-called educational purpose. According to thunderf00t, fair use is perfectly fine if someone records 60 minutes of film footage from somebody else's movie, then uploads it onto youtube with a 30 second commentary by the uploader! That's obviously copyright infringement. Not fair use. It's not an illegal DMCA if someone uses footage of mine that doesn't belong to them. Why is this so hard for thunderf00t to understand? 4. Yes, I DMCA'd thunderf00t (darn proud that I did too!). But what else is new? Thunderf00t has been DMCA'd so many times anyway. All I asked him to do is to mention my channel if he's going to use footage of mine. He refused to do this. He hasn't asked for my permission and he illegally steals my stuff. And when he does take my stuff he deliberately takes out the image of the link to "Reasonable Faith." And I'm accused of censorship?! 5. I am not responsible for any of those blogsites or websites about theowarner and AndromedasWake. That's a ...
Video Rating: 2 / 5

GERD — Comprehensive overview covers symptoms, treatment, diet issues of this acid reflux disease.


Orignal From: Chemistry Classics: Acid/Base - Vinegar (Acetic Acid) and Baking Soda (Sodium Bicarbonate)

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