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Question 283.57 ptsWhich intermolecular force most helps isopropanol dissolve in water?HH-C~C~HH 4dipole-dipole forceshydrogen bondingion-induced dipole forcesdispe...

Question

Question 283.57 ptsWhich intermolecular force most helps isopropanol dissolve in water?HH-C~C~HH 4dipole-dipole forceshydrogen bondingion-induced dipole forcesdispersion forcesion-dipole forces

Question 28 3.57 pts Which intermolecular force most helps isopropanol dissolve in water? H H-C~C ~H H 4 dipole-dipole forces hydrogen bonding ion-induced dipole forces dispersion forces ion-dipole forces



Answers

What is the strongest type of intermolecular force between solute and solvent in each solution? (a) $\mathrm{CsCl}(s)$ in $\mathrm{H}_{2} \mathrm{O}(l)$ (b) (c) $\mathrm{CH}_{3} \mathrm{OH}(l)$ in $\mathrm{CCl}_{4}(\mathrm{l})$

So now we're gonna work on problem 12 from chapter 13 in this problem, were asked about the type of or the strongest type of inter molecular attraction or interaction. Uh, between sol, You'd insolvent it for three pairs of solutions are for three solutions. And so we have first see six age 14 liquid in C eight h 18 which is also a liquid. So here we have just carbon and hydrogen bonds. So there's no diable, no I arms. Of course, No hydrogen bonding because we don't have oxygen, nitrogen or flooring. So the only thing there is is dispersant forces the London Dispersant forces to be correct to be a accurate. So if we look it, Herbie, we have hte to see Double Bond. Oh, this is formaldehyde. This is a gas and it's in, um methanol ch 30 age which is a liquid. So here, um, we don't have any ions, but we do have a way. We have disciple disciple interaction. Um, because of the oxygen, the imbalance oxygen there. We also do have hydrogen bonding well, but the disciple disciple in direction is stronger. Uh, Inter Molecular force So disciple disciple for her it's see, we have bro mean to which is a liquid. And this is in carbon tetra chloride, which is also Look, we're so here. We have no ions. These air both co bailing compounds. We do not have a disciple because bro mean is perfectly symmetric or is there's no electron imbalance. And for a carbon tetrachloride, we have the carbon chlorine bond is polar bond, but we have four of them and they're all perfectly cancelling each other out. So we don't have any effective Dybul for either molecule. Um, and as I mentioned before, we don't have Ah, you don't have the ions. We don't have ah hydrogen bonding because there's no hydrogen or oxygen nitrogen in Florida. So the main thing we have here is again disperse it forces

No, not remember. Inter molecular forces, our forces that will care between compounds or atoms and not within a compound. So it's basically between substances. So for the 1st 1 we have ch three. Oh, I see. It's three and want it. Let's remember, water is made up off oxygen down to two hydrogen atoms. Oxygen is a highly Electra negative. Atom. Hydrogen is a very, very low in terms of electro negativity is I'm gonna have a strong pressure. Negative. Charge me. I'm gonna have ah, partial positive charge here. Similarly, oxygen is more Electra negative than carbon. And so for each of those compounds, I'm gonna have a net negative charge here on the net. Budgeted. Tried to you. So what'll end up happening is that I will start having polar interactions between the slightly Electra negative oxygen and electro positive hydrogen. Andi, I'm gonna have similarly interaction between the oxygen and this compound on the slightly positive hydrogen in water. And so in this type, it's polar interactions. The reason it's not hydrogen bonds, even though I could have a potential for hydrogen bonds over here, is that this oxygen is not bound the hydrogen, but instead it's bound to the slightly more electoral active carbon For our next case, I have MM neon dissolved in water. Eso Let's remember neon Gus in the water h two wo Let's remember this is, um, in it gas in group eight of the periodic table on DSO. It does not form. Ah, let's say and he to that strong because it has a full outer shell. All right. And so here the only type of compounds are the only time for interactions that's gonna have is, as a result, off a temporary die Paul in neon. Ah, as a result, off a shift in the electron clouds. And so I have this knee an atom which is neutral, but occasionally some director and crab my chief, for instance, and decide creating a slightly negative charges slightly positive charge on In this case, it's gonna just temporarily interact with, as we know, the uneven charge distribution in water. And so here These are called either vander while forces. And so we called them on develop or another name is London. That's right. It on another peach Ah, with the underworld or vendor bad or London dispersion forces which are as a result off temporary. The last one is nitrogen dissolved in getting on and to see for age 10. If you look at and to even though I have electrons on both sides, it's basically a symmetrical molecule. And so it's none polar, and here I also have a non polar molecules. And so when I have to a non polar molecules, what the type of intellectually injection that I would get is also, as a result, off the temporary in Just Die polls banter, but

This question again, you're asked to determine the strongest type of inter molecular force between the salute and the solvent Part A is essentially the same in problem. 11, as it as part B is in problem nine. And this one I still have issues with. We have an ether that is polar, but it cannot exhibit hydrogen bonding. It does not have hydrogen directly bonded to an oxygen, nitrogen or floor. Een. So this has a deep hole, hydrogen has a strong dipole and can exhibit hydrogen bonding with other molecules that have a hydrogen bonded to a nitrogen, oxygen or chlorine. So I would call this dipole dipole forces of attraction, although the book I know calls it hydrogen bonding and I'm not quite sure how they can justify that. Next. We have a non polar species in something that is polar. The polar species can induce the dyp hold in the non polar species. So this would be an induced dipole dipole force of attraction or die. Poll induced dipole however you want to, whatever order you want to put it in next, we have a non polar species, mixed with something that is non polar. If we have all non polar species and all we have are dispersion forces.

So enter molecular forces. Let's remember, Are they attractive forces between molecules as opposed to enter molecular forces, which I within the molecule? And so let's examine our compounds First, we have caesium chloride in h 20 What's the strongest type off inter molecular forces between cesium chloride water? Let's remember that season chloride is a compound eye and I any compound need up off a positive ion of cesium and a negative line of chloride on its dissolved in polar solvents, in which I have a question negative charge on oxygen and the passion positive charge of 100 accordingly in and I on a compound in a polar solve it the most or the strongest type of inter particular force is gonna be di polled di poll, in which for 50 0 for instance, it will have some form of far di pull interaction with the negatives partially negative. Charge hydrogen on Dickie's off the chloride ion. It can have a passion are an interaction and apple interaction with the partially positive hydrogen atom. Now, for our next compound, we have the following, which is a key tone anyways on is dissolved in H 20 as you said This is a polar solvent on Dhere. I have a net die polled because oxygen is more Electra negative for carbon I have And that negative charge over here are a partial negative child and a partial positive charge on dead diaper like this on DSO. This is gonna interact with the partially positive hydrogen off one motor barbecued on this is gonna interact with the partially negative oxygen off another lunch. Ironical. And so again, it's diapered apple interaction for my third compound. What I have is an alcohol methanol, to be precise. However, it it is dissolved and carbon tetrachloride, which is non polar. Even though this is Spooner due to this presence of the sidetracks of group, the thing is that we know that like dissolves like and so unfortunately, this partial negative charge will play no role or not. Let's in the control inter molecular forces. What's what happened? Is the the most prominent diaper forces. That's gonna be their idea. Under, while forces which are usually afraid to ask the non polar forces which are gonna predominant to take place between the carbon here on the carbon here due to the random motion of the elector clubs. Now, this is no poorly. Because if we examine its structure glory, we could see that it symmetric eso the disciples actually cancel out. So there is no net polarity and there you go.


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