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Problem 82

When 0.100 mol of carbon is burned in a closed ve…

University of Toronto
Problem 81

Calculate the maximum numbers of moles and grams of H2S that can form when 158 g of aluminum sulfide reacts with 131 g of water:
\mathrm{Al}_{2} \mathrm{S}_{3}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{Al}(\mathrm{OH})_{3}+\mathrm{H}_{2} \mathrm{S}[\text { unbalanced }]
How many grams of the excess reactant remain?


$\mathrm{n}\left(\mathrm{H}_{2} \mathrm{S}\right)=3^{*} \mathrm{n}\left(\mathrm{Al}_{2} \mathrm{A}_{3}\right)=3,15 \mathrm{mol}$
$\mathrm{m}\left(\mathrm{H}_{2} \mathrm{S}\right)=107,29 \mathrm{g}$
$\mathrm{m}\left(\mathrm{H}_{2} \mathrm{O},\right.$ excess $)=18 \mathrm{g} / \mathrm{mol}^{*} 0,98 \mathrm{mol}=17,64 \mathrm{g}$



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Video Transcript

So the chemical reaction is between, um, there's, ah, I'll move himself. And also water give a former Newman hydroxide and also, um, Hodgins So fine. Okay, so you we have 1 58 off our limits. I'll find the 131 of water. What will be the maximum limbo mobile issue? Ask most. Unmask the interviews. Okay. I can physical. I would, um we have to bounce some chemical. Yeah, sure. So, uh, let's start with, um let me in first. Okay? Let me make some space here. So we have two aluminum because we have two of them left. This one and with buyers will be yourself for so for self where we put a freon from the wish to. As so, we have three sulfur. So we already done by using aluminum. And so for the next one will be looking at, um, happy with all sicher. So on the drive over 1/2 6 oxygen from the aluminum hydroxide, so I would put a 16 fund off water. Just make sure we have seen them barrels. I'll see you. All right. So we have six off the oxygen. Okay, so, uh, we have okay, so in love. We have 12 hundreds under, right. We have 600 from Adam Hydroxide. And also six. Homage to Oso is Bones. So we have a band. Sam called reaction. Okay, so first off or you want to find the maximum Moloch to ask being Proteus, we have to find the Dimension re agent. So we have the massive movie agents over your first up to you convert that to limbo most. So we're going to convert a master alchemy and self I to limbo Moza from forming Mass. So we have to first wild, uh, will amass offer album himself, I So you can go refer to of your table and finally, the corresponding with a mass. So it should be around 1 50.171 54 17 for them with a mass. So we have our massive I buy more than mass, and we should be able to find a swiftly around one point all find more for aluminium sofa. So if I okay for water, So, um, we should be able to find that it's for forever unsafe. Important too. Um, eight mo off water. 7428 more water. Okay, so Ah, you know that you find out? Um nothing. We agent we can eat a one another we agent, And then we are going to just the motorway shows to find out. Assume we're going to food Here we have the re agent that we pick. What would be the amount of the re Agent Thea other waging that we need? So for the four fall from here, I will chose Ah women self. I you can chose water up to your rituals. I myself So if I have one point old, five more of himself by how many limp omo off water need to fully Well yet So I you can see that the motorway show is 1 to 6. So we just multiply that by six The Lambo mo off um himself up by six and we should people see a 6.3 more. You know that the food every everybody lm yourself I really only need six point for you most off water And how much do we have? Actually, we have 7.28 most so therefore r l Lumi Um um self There will be our debuting we agent So I lying glatt. Okay, so we calculate the, um the massive limbo move virtually absent. Proteus, we're going to just a number mo for heirloom himself. I really start inventing we agent. Okay, so the number of mo off our h to ask. Oh, Dios. We're looking at the motorway show. Where? One to flee. So 123 So we're going to multi one point. All five part by it slowly. So we have one people in 15 Most four hour is to ask for us to ask and the corresponding mass. We're going to multiply our limbo. Move H two s by the modem ass off H two s. So h two were two hydrogen. And also we have one sell for We should have 107 Crap. When those seven grand for the maximum Ambien po deals. Okay, Part two of the question is what will be the Macedonians that suasion we make. So we know that it's water, water and the mess we meaning is that Okay, we got water. You see excess? Ah, l gloomy And we conscious exploring Fremaux from the water and the remaining water. We'll have a 7.28 minus six. Phone free. Ah, Luffy! Around 0.9 more Off water. Oh soo, a 00.98 off water. All right, so the mass off that we will be Ah, 17 points sakes. No. Four gram or what? They're on 18. Grammar water remain and Ah, the model mass of water is 18 grand promote And here's the remaining mass of water.

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