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Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJCalculate the valu...

Question

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJCalculate the value of q (kJ) in this exothermic reaction when 4.60 g of hydrogen peroxide decomposes at constant pressure?

Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:2H2O2(l) → 2H2O(l) + O2(g) ΔH = -196 kJCalculate the value of q (kJ) in this exothermic reaction when 4.60 g of hydrogen peroxide decomposes at constant pressure?



Answers

Liquid hydrogen peroxide, an oxidizing agent in many rocket fuel mixtures, releases oxygen gas on decomposition:
$$2 \mathrm{H}_{2} \mathrm{O}_{2}(l) \longrightarrow 2 \mathrm{H}_{2} \mathrm{O}(l)+\mathrm{O}_{2}(g) \quad \Delta H=-196.1 \mathrm{kJ}$$
How much heat is released when 652 $\mathrm{kg}$ of $\mathrm{H}_{2} \mathrm{O}_{2}$ decomposes?

This question deals with gas laws and gas properties. Were asked to take a look at this reaction, the decomposition of hydrogen peroxide, uh to form liquid water and oxygen gas. And so the first thing we need to do is balance the reaction. And so we've done. That. The next question that were asked is and were provided with the information that the total pressure exerted by the oxygen as it's collected over water, and the water that is collected over also exerts a partial pressure. And the experiment takes place at 25°C. So we used a table of data to inform us that the partial pressure of the water under the those temperature conditions will exert a pressure of 23.8 millimeters mercury. Okay, so that's a known given value. Together the total pressure exerted by that mixture as oxygen's collected over the water Is again provided in the question as 763.8 mm of Mercury. Well, we can see that it's pretty easy to solve for just the partial pressure of the oxygen. Now, knowing that relationship, so we can see that the water, sorry, the oxygen Will exert a pressure that I'm 740 of Mercury just by itself. So that was the first question we were asked to address. Now. The next part of the question asked us to use that partial pressure to figure out how many moles of oxygen are collected. And that's what the ideal gas law is going to come in. So here's first. What we need to do is make sure a pressure units are appropriate for and volume units are appropriate for what we're going to utilize in um, in terms of the ideal gas law. So the pressure units we want to utilize here are given in millimeters of mercury. So the gas constant, we want to use this form of the gas constant, ensuring that um, tor Which are equal two of Mercury, mm of Mercury is the same as 742. Or that we use the gas constant that utilizes that pressure unit system that we're going to use. In addition, we want to make sure that the volume and temperature units are appropriate. So we see that the volume of the gas constant is and leaders, but the volume we were provided as in milliliters. So we simply converted That 49.5 million liters of oxygen 2.0495 L. The final step is anytime. We use any gas law, that temperature has to be in kelvin. So we were initially told that this process takes place at 25°C. We need to convert that to a kelvin temperature, That's 2 98 Kelvin. Now, we have all the information we need to be able to determine overall the number of moles of oxygen gas collected, So the pressure of our oxygen was 740 The volume it occupies, we're told is .0495 L. The gas constant is that 62.4 And our temperature was 2 98. Sophie crunched the numbers here. We can solve for the number of moles of gas of oxygen produced here. And so in solving for the number of moles of oxygen, We get .00197 moles um produced overall by this entire process. And we recorded three significant figures because that's the amount that was maintained throughout the course of all the numbers that are involved in this process.

All right. So for this question, were given the following unbalanced chemical reaction, assuming the 10 grams of hydrogen peroxide were asked to find the math of oxygen gas resulting from this reaction. First, of course, we have to balance it and the oxygen's another set or not balanced. There's three on the product side and two on the reactant side. So I'm gonna double extra whoa so that we have four oxygen's on the product side and two on the react inside. I'm also gonna double hydrogen peroxide now balance out the hydrogen ins and balances out the Austrians. We have four. Hydrogen is on either side and four oxygen Jin's on either side. All right, so now that we've balanced it, we can solve for the mass about two resulting from this reaction. 10 grams hydrogen peroxide. One mole hydrogen peroxide has a mass of about 34 grams. Of course, with the coefficients of this reaction, we know that two moles 100 peroxide generates one mole of oxygen. Now we just need to convert from moles to grams of oxygen. When more oxygen, it's about 32 grams. So from 10 grams pagina peroxide, this reaction yields 4.7 grams of oxygen. Yes,

Considering the decomposition off hydrogen peroxide as followed. Do you have? It's two or two. Give me to edge too. Less or two. The heat off Formacion off. The substance is defined us. And tell me change that takes place when one mole off compound is formed from its constituent elements in their standard state. The reaction off H 20 tow information is shown. US followed. It's too. Yes. 02 gives me h Oh, oh, Inch mathematically. The heat off formation off EJ toe is find using the full integration. So on, left inside will be born broken, right? And so it born formed. So we have. Don't wander off as 498 Hello, Jules or more. We have hydrogen bone breaking is equal. Do 436 Killer Jones. The born form will be to off, which gives me 928. Calo Jules on DDE. The born off oxygen to excision gives me 142 killer Jules, the heat off formation is calculated. Bye. Born broken. Subtracting the intel a p off born form giving us the heat off formation as negative. 136. Killer Jules for option B. The heat or formation off liquid Bordeaux is also calculated, which turns out to be negative. 243 Killer Jones For more yes, option C The heat or formation off oxygen gas excision Guests is Tzeitel because the standard elemental form off excision element Option D. The balance equation for the formation off hydrogen peroxide is also shown. It is, it's too plus or two gives me vegetal or two. The balanced equation for formation off water is given itch to bless. Half photo gives me its stool and ocean e the falling for the decomposition off hydrogen peroxide to form water along with oxygen gases. All social. So it is to edge too, too. Or do blessed Oh, sorry, resource in tow to its toe. Unless Books Ian the final hit off, the reaction for the creation can be presented on dhe. The change in mentality can be determined for the entire pee off the products minus the entirely be off the reactive, the changing and tell a P is negative 107 kilo jewels for more. Here is the picture depiction off decomposition off each toe

Question 11 15 thiss question one t How we're spending it Here are thiss question This person, your experience of some feet asses Brook farms. It's just for you, Toto. I'll be ableto laugh sometimes from it. So I'm gonna give parents right and two for two. It's composed any pretence of continental for water on our singing. The catalyst is added, added in process. Solution turned. Five princesses are fourth and I'm on five mils. It's Clinton over there. Add it to the print off. 7 63 point it's we live in Sam McCord writing patient. So it's already been five patients and notices solution. Right? Right. This kind of cash, I guess. Okay, now there's a contact list. Well, you know, now our family can read it for the Arabs, so I'm getting the balance. His reaction would have to have bragging. That too, with from Dallas, if you know we don't have everything is fine. We have to up to here one of you here on a bath. I think this one this balance, everything are arrested by these. Teo too. A cast? No, thank you. Absolutely. Then what about everything by two. It's on the wire. It's all a bit too, And it's all beaten. So that is the special class. So the second question look on the brink of order on at his condition under these conditions. So hey, before his condition started five clip at Family. Family Queen. I guess maybe it's tough. It is three points. So his quarry. How's it you, detective? Defense went through. Bye. Or for the actual family. Resistors is hereditary by cell. Can't see the questions they wanted. The pampering her oxygen collected. I won a bet off city that is calling Howard. If we look at this question, the question give 40 times. Pasha, it's a the canton, please. Okay, Ready the question. Thie catalysis. Intento. Find military. I brought in parasite, so that probably recesses 49 5,000,000 That is connected by water that it took Africa Topsail 63. Find it. You know the bullets Cassis, and that's a part of them has so on both of them. Out this temperature 73.8. So wantto find it odd that pressure off, obsolete, and the protector of our city. You know the pressure pressure off. What happened for that? That is what we get in back, which will be a special for the Mantis 23. It's the's question. Does it about subtraction to see pressure? Because Theo too. Those p So yes, PT PST cell 2 57 since 3.8. Purity is What are we looking for? Some people rise 23.7. He just subtraction. So we are sinking. Maybe so. Just 3.8 minus 23 points. Seven. The Yankees 7 40 Quite Sara, too. Let me make a call. So 20 a question asked how many more oxygen are collected. So this party is We have to get more after getting full of oxygen. So the duties willinto getting more of the cat because his TV For an artist well, you know you know the pressure and inform that weak that it forms following this for God gases off Put oxygen water So we don't have this way of passion Pressure off what life really is. Print it. This is empty door being off singing. So the duties that will be our city then second get an obsidian in charity. So you think the reason why not? Because I don't have the city protected So we have to find anti force. So lemon friendly mole off death? No. So tomorrow I mean podcasts. So we used be Auntie. It would be increase at this speed team are See? Certainly my nt will be with baby. My temperature is 70 63 Find it. Our optical fart sounds just tryingto Mostly I wanted to be in that chair and you buy back sound system. It's being math. Most fear from my father. Well, only for 9.5. So we also buy them one by 1000. Because I wanted to be in later. Yeah. Then my danger Because of the unit of ours 13 hour usedto these few names of our artists. Fine. 08 to that. Have most here Krafft gave me. You see the reason why he's confident? Because I know I first got here, you know? So the dance is what I have with my dad. Then my thang creature. He's to 25 circumstances to 98. Everything. So if I do these end Toto, maybe King just as well, when I get my hands on that too. Yeah. 0.3 five Contento Monastery More? Yeah, and the moral of two passes. But now, in before love I'm sinking so full of obsidian and more well, pressure. Goodbye. That that right What they find by so that more I mean that. So you're not going to be president. Subsequent 7 40 That's over. A couple of some pointy toe spare found limit on inquiry and portable secretary. In the meantime, Zachary Bye bye. It was that more to find. There are 35358 content My no story and I care one point my they want to transplant a monastery More. Oh, our signal, right? Run the path of the question now 11 So stow harmony Gram of 11 parasite in Bari Tina Suffer. So originally we have waited outside for that. You're getting away with it. Six. Want fans to know 16 times two. Excuse me, grandson. So initially we have five later. I hope that parasite for this is that that project when the family Christmas elf honey, they're also steal three fine kids. Akron Canton number more ofthese beauty. More laughs following relationships. So on any for you. So he's arrogant parasite Holland means but my parasite Astor family process, which is STP and Santa. On what must sound system living that is after Stimpy. So I would do death by using that. Rejoice the same. How are you feeling? Because I think Angel. Dr James, My delivery too. I'm quite happy to indeed. Do you want anyone? And then we give me five men. Thanks. Have them in a cell on 63. Leave me if I didn't buy 7 60 on donkeys. Five points. 017 Linda off off already! Parasite! Sally! Stp! Okay, now I get it. Five y Ciro 197 Lily to off all suits at STP. You know, 11 off it. This compound up s titties. We have a problem or 22 False. 00 That is malevolent. Formal or kiss? We have this fall. Interesting. So this gives us and I doubt it. Well, when I get there now we know one more log on religion. Parasite! I'm one of Reddy Parasite! Oh, sorry. One more thing. Who won? Gold? Off begins, Parasite! We are monster! 34 grand. So I think one family. Get in my ass. Two. I don't know that. And they get self point Series of one man. Gentlemen, So that is the graham off. I've broken parasite in the sample. So the part The fat ass for the concentration of legend parasite in More later, I really learned in my seven point says on the extent of manners Terry Graham, five parallel sides. Now we know one bull off a bridge in parasite as the mass ofthe party for Graham that my beauties ground counselor, as so many have come potato more What? I'm in more Paletta Wei have five you may. We'll finally get to say, as a sort of following initial services. More part May, But we'll know more later at ease. And men Well, let me see that and more. No more will stay in India then what? So is in my calculator against the point I care for Mom war And the last question What part of his process is conceptually motive? Equality File Who? I don't know. Probably the most difficult for you. Well, I guess these but might be difficult for some proof. My difficult for some proof because they were already came from five ml off five, Ten 10 minutes off into I want to Well, we're not going to use back there because that found me the science that pressure off his impression of some system 3 20 which is not stand oppression. So you might forget a cough. So Catholic follow off it too. Part two, that stand out condition 7 60 Michael, I wonder if you do this A couple it follow months studying conditions we get, we get by with their five points. 019 So if we use these no answer. My still be closed toe. Correct as a guest in close. But is he writing his toe copulating? Fall of substandard conditions because it confuses people. Moola, silence so and so lightly, Conceptually difficult for some people. I'm also trying to seem days. Other home types might be my also challenging when independently group and Ben as a county association. Thank you.


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