Hi everyone, in this video I will discuss the pH and Buffer lab, which you'll be doing next. This lab has five components in it so please pay careful attention to all the videos because each...
Hi guys, so in part D of the lab you're also going to calculate Ka which you also did in the previous part, however in this case you're going to determine Ka for an unknown acid, so...
My name is Christine Marquette and I'm registered dietician with the Austin Regional Clinic and I'm going to talk to you about how we use chlorine. Chlorine is actually a chemical...

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>>We all know something about fermentation. It's a process used countless times each day to make a variety of dairy products, baked goods and beverages. We sometimes think of it...
PROFESSOR CIMA: OK, so what determines acid strength? Bond energies. So here I've tabulated some interesting data. So here's some K_a's, here's a bond energy, and what...

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PROFESSOR CIMA: As you know, we define the pH through this water dissociation. So if K_w is this product, you can take the log, log base 10 of each side. Or I can solve for the hydroxide ion...
PROFESSOR CIMA: OK, next one is, with these weak acids, we're going to use, again, an equation that gets a name, Henderson Hasselbach, a couple of physical chemists. They took this equation...

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PROFESSOR CIMA: OK, solubility and pH-- I think I'm going to put this up next time. If this is some solid that is a sparingly soluble salt like you've studied, it'll have some...
PROFESSOR CIMA: So we calculated the pH in the presence of a strong acid. Let's calculate the pH in the presence of a weak acid. In the case of a strong acid, it was pretty simple. You just...

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Chemical equations are fundamental to understanding chemistry chemists use chemical equations to describe or actions in order to understand a reaction a chemical reaction you need to write a chemical...