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True or falseIn a buffer system the weak acid neutralizes the added base...

Question

True or falseIn a buffer system the weak acid neutralizes the added base

True or falseIn a buffer system the weak acid neutralizes the added base



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What is meant by "pH"? True or false: A strong acid always has a lower pH than a weak acid does. Explain.

The first part of this question asked us about the definition of pH, and that is qualitatively speaking. It's a measurement of the concentration of H 30 plus. Now, more specifically, it's a log rhythmic scale where pH is equal to the negative log of the concentration of age trio plus and so a few characteristics of this as the concentration of HBO plus increases pH will decrease. In addition, if the Constitution of HBO plus is greater than one, pH can be negative, although many people don't realize that because it's not commonly seen. Finally, the difference of pH between six and five is a tenfold difference. It's not one unit of concentration. There is 10 times more HBO plus in Ph. Five Ph. Six. Now, the second part of the question is a sure false If. Is that the pH of a strong acid always less in the pH of weak acid. And the answer is no. This is false, a strong asset. In a very small amount, we'll associate almost entirely and will give some amount of HBO plus. But if the weak acid is added in much greater quantity in like much greater concentration, then the concentration of H +20 plus can exceed the concentration that is produced from the strong acid. So is not always true that that's the case. PH is both a function of how strong the acid is and how much it associates, but also the amount of asset there is to begin with.

For this question, it may be important to first understand certain terms within the question. So, it's asking about the secretion of hydrogen ions are protons And lowering a ph So, if you remember, a low ph corresponds to acidic conditions, and the secretion of hydrogen ions means the excretion of them and the transfer them into the new Effron. So into That's right. So I'll draw a quick ephron right here. That way we can help understand if this statement is true or false. So here we have our hydrogen ions being moved into the Net Franz And are now Effron ultimately leads to the bladder Where are fluids will be excreted. So our body ph You are actually losing these protons Into the kidney and the bladder for excretion. So less Hydrogen concentration corresponds to a greater ph. So here the answer is false, In case you're wondering about how Our hydrogen ions work in this manner, they actually are not secreted out into the bladder as hydrogen ions. What happens is there's a buffering system inside the blood. You know? We have carbonic acid And we also have certain phosphate buffers and ammonia buffers. And these hydrogen will bond to these ions and buffers When they bind to them, they're going to create substances that will actually be reabsorbed back into the body. And this will help preserve, say you're carbonate concentration, You're phosphate concentration and your ammonia concentrations. This helps keep your body ph staple. However, if you recognize that the hydrogenated form of this bicarbonate,, You have a church to see 03 And this is a molecule that readily Associates into water and carbon dioxide And this is what Both of these molecules are excreted out in the lungs. So when your body ph starts to lower meaning you get an increased concentration of hydrogen ions, you actually end up losing the hydrogen ions by breathing out water and carbon dioxide from the lungs, And this is how your body maintains a more stable And more neutral kind of Ph. But here, the answer for the hydrogen concentration after secretion into the Net Franz is false Because we are raising the ph in the blood.

So the question we're dealing here is what is a buffer? How does a buffer work? How did it neutralize? Added s it or added base. So what is the buffet at first? So if buffa is a solution that resist the change off ph off any solution So it rivest her p exchange off any solution? So how it don't it so a buffer? It might be contained from the week s e. That is I can fight it like this is my week. S it Plus it's gone. You get base on, It's going to the base is here or it might be composed off it Week Beith, that is my weak base bus. It's congregate. Yes. So this is my buffer solution. So how it works when we add additional amount off, base it on base. Isn't our base here in the solution? The ad? Yes, it is our base. Then this buffer utilizes the addition off this incident beats So how it does now? Here is my beaker Beaker. Full off buffer solution. So let us consider for the first part in my buffer. I have week s it, Andi. It's kinda good base. So if I had additional air seed. That means h plus in the solution. Then my buffer, the weekends it from my buffer will associate and it will neutralize the addition off excess. Essie, with this reaction and it will fall the week s set again. On the other hand, if I add additional base here, then it will go with this reaction. Oh, I'm sorry. I should if it's wrong, so it should go with He's prone countries with a C on it will react with that. I added peas to produce water. Now if I consider another bumper that consistent with base that is my HBO h o b Andi it's going to get s it then if I add additional s it here, that means I'm adding each plus there it will react with the oId age off the solution and it will produce a stool in this way it will utilize and it will reduce the pH from going down. On the other hand, if I add Oyj, that means a base in the solution Then my I want to get Essie. We form the room. Is it again? So this is how buffer works

So in this video, we're going to be answering Question two from Chapter 17 which is what is a buffer. How does the buffer works and how does it neutralize acid or base? A buffer is a solution made up of a weak acid, and it's Kontic it base or a week based on its congregate acid. There was this Changes to pH. It does this by using the weak base to neutralize any added acid in the weak acid to neutralize any added base. So let's say we have a buffer solution of a weak acid h a A and it's conjugal face a minus. If we add acid. Suddenly we have more aged Rio plus present, but the A minus can react with it to form a che in water. Similarly, if we add bass suddenly we have more O. H. Minus present, but the A J can react with it to form a minus in water. Notice that age a. An A minus appear in both of our equilibrium expressions, so adding acid just makes more H A, and adding base just makes more a minus. Given that we're adding just a small amount of acid and base in the age, Theo concentration and stays about the same. So our pH, which is negative log of this HBO concentration, remains constant.


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