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41. Which is the tert-butoxy fragment? a.(CH;)CHO- b. (CH3)CCHzO- (CH;CHz)CO- d. (CH;) COCHz- none of thesc42. How many alkynes have the formula CsHs? b. 2 c.3 d. 4...

Question

41. Which is the tert-butoxy fragment? a.(CH;)CHO- b. (CH3)CCHzO- (CH;CHz)CO- d. (CH;) COCHz- none of thesc42. How many alkynes have the formula CsHs? b. 2 c.3 d. 4 e.543. How many alcohols have the formula C HsO? b. 2 c.3 d. 444.How many ketones have the formula CsH6O? b.2 c.3 d.4

41. Which is the tert-butoxy fragment? a.(CH;)CHO- b. (CH3)CCHzO- (CH;CHz)CO- d. (CH;) COCHz- none of thesc 42. How many alkynes have the formula CsHs? b. 2 c.3 d. 4 e.5 43. How many alcohols have the formula C HsO? b. 2 c.3 d. 4 44.How many ketones have the formula CsH6O? b.2 c.3 d.4



Answers

How many isomers are there with the following descriptions? (a) Alcohols with the formula $\mathrm{C}_{3} \mathrm{H}_{8} \mathrm{O}$ (b) Bromoalkanes with the formula $\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Br}$ (c) Thioesters with the formula $\mathrm{C}_{4} \mathrm{H}_{8} \mathrm{OS}$

This problem is from organic chemistry and is based on the structural formulas of the organic compound. We are given some of the Elkins. We have to draw the structural formula for diesel times. The first one is to painting Pantene represents five carbon atoms with a triple bonds At carbon # two. So we can represent this molecule as CH three. See triple bond C. Ch two, CH three than we have the second molecule that is for metal to painting in this case, five carbon attempts with a triple bond at carbon number two is present and four carbon contained metal group. So the structure can be represented as Ch three, See triple bond C. Ch having CH three groups. Then CH three. The third molecule is to metal head design. It has the structure CH three, C. H. Having C. H. Three groups. Then see ripple bond C. Ch two, CH three. The last one is 3, three diamond tile one built in. It can be represented as Hc triple bond, see See having to metal groups, that is CH three, Ch three and Ch three. So these are the structural formula for the given and times

I look, the question is, how many structural is most of C three s 60 lb are possible and how many of them are optical activity? Okay, so C three S 60 nBR compound, President CS three CS 2 Ch CN. And beyond the name of this compound is van caravan brahma dropping they if both of us here and we are can come on the two different carbon then see it CS to be right, If both real and we are willing to change then we can get this come from tonight and 4th can form that, go to sail and we can come at a second carbon. And in the 50 molecules we are here CS two CS students here. Right? So there are five molecules that are instruction I summers off given come home now. How many optical instruments? A bigger compound is that in which molecule carol center is present? Carol center is dead carbon. They have older four groups which are attached to their carbon. So to be different. So this carbon is that carol carbon because we are hydrogen and cl and this had a group on the four groups are different. So this carbon with carbon, they in the second molecules this carbon is not carol carbon because this carbon have four groups that are different hydrogen chlorine and the ch to be our group. And in that era molecules this carbon also current carbon. But in the 4th and 5th molecules there is no carbon that have under four different groups different because this carbon, this carbon help you see a study group that are still right and in this molecule all the carbon have to hire two thirds style. No one carbon will be carol carbon So optically active compound will be three and the structure is almost will be five correct option will live

In this problem were asked to draw all 14 al kinds that have the Formula C seven age 12. So the way I like to approach this cycle problem is will start out by drawing all of these straight chain versions of the all kind. And then we'll start adding subsequent as methyl groups, Apple groups, whatever instead of straight chains. So to start off will have straight chain, um, with the l kind on the end. So that's 1234567 carbons there. Then we'll put it on number two. So 1234567 carbons. And then we'll put it on number three. So 123 four, 567 carbons there. Um, so it's all of our unique straight chain, um, Alcan's are there. L kinds. So now we will add a methyl groups and we'll do a six carbon chain and will add a medical group. So if we start with it on the end, 123456 We can have a metal group here. Um, or 12 3456 We get another group here, or 123 or, uh, oops, 123 456 We can also put the metal group down there. Um and then we can dio the metal groups with, uh, the l kind of the second carbon. So we start here. That's 123456 We can have it here. Or one, 23456 We can also put it up there. So now we're at 12345678 Um, we could also do a metal group where we have it on the third carbon. So 123456 We can put a methyl group there. Then we could also do two different muscle groups. So again, starting with, um, when we have the l kind on the first carbon. So we'll do a five carbon chain now, um, so 123 or five. And then we can do to metal groups so we can put them both on that Corbyn 123 or five that can be pulled on this carbon. Um, or they could be opposite carbon. So 12345 You can have one here and one here. Um, so that is 123456789 10 11 12. So there's two more eso we can do an actual group instead of a metal group where we still have it on that first carbon. So 123 45 We're sorry. 12345 and then weaken dio an apple group on Wait, That doesn't make sense on this one. There's the Apple Group on. And then the last one would be if we put the Al Qaeda on position to. So if we put it over here, that's 34 567 we can make that your people group on one side, um, son were asked for both the AIPAC and common names. So I'm gonna do the AIPAC names in purple. So starting with this one, this is one have time because we have a straight chain with the, um, Al Qaeda on carbon one. Then we have to have time and three step time over here. Then we started adding methyl groups. So this is one heck sign with a metal group on carbon three sources three metal, one heck sign. Um, and then right here. Now we have Let's go down This Cipparone said so now we have four Bethel one Heck sign and five Medical. One x sign. I will go to this row. So now we have, um, to hex sign. And this one has a metal group on carbon four. So for Bethel too. Heck, sign and then five metal two packs. Sign you. Come up here. This one is 123456 Um and it is, um, the muscle group on carbon to this is to metal three x sign. Um, don't. Here we have 12345 carbons. And we have, um 44 dimethyl. This is one What I say Five carbons. Pen time down. Here we have 33 time ethel, one pen time, and then we have 34 dime Ethel. One pen tiene. Then our last couple appear longest chain would be 12345 And so this is three death toll one penn tiene and this one is 12345 So this is we're for dime Ethel Teoh Pan. Time for the eight back. So there are all of our are you pack names and then I'm only going to do the common names for the ones that have common names. Um, so those are going to be the ones where we can use the word of settling in them. So all of this first row over here would not be any different in a common name. Um said them. Well, look at this road right here. So we have on one side, a methyl group and in the other 1234 carbons. That would be beautiful metal. A settled lean down here, we have a metal on one side and a sec. Beautiful group on the other. So that IHS sec beautiful. I don't think that has a m dash sec. Beautiful Bethel settling absolutely. Race that muscle group there. Um, and this one is an isil beetle on a metal. So this is why so beautiful Methanol A settling or the common name? Um, And then over a top. Here we have an ethyl in a pro Bowl. So, Ethel, Pro Bowl A settling. Um, here we have an isopropyl on an awful So Ethel isopropyl a settling is our common name there. Um And then what else can we do? A Commenting for this one. This one has a metal and a tort. Beautiful solicit be hurt. Beautiful metal, A settling as our common name. And those were the only ones that really have common names that are any different from

Alright, this problem is from organic chemistry. We're in the first part we will tell water all kinds. Then in the second part we will write the other name used to describe all kinds. Then we will write the general formula for the all kinds. And at last we will compare the general formula for the all kinds with cyclo Elkins. The first one is all kinds. So all kinds are the unsaturated, I drove carbons which contained one or more carbon carbon triple bond. That is they have this kind of arrangement. Well there is people want formed between carbon carbon. Each carbon with triple bond is he hybridized. Then the other name used to describe Veltins is a certain unique hydrocarbons. Then we will write the general formula for the all kinds. The general formula for the all kinds is C N H two N -2. We're and represents number of carbon atoms in the molecule. Now we will compare the general formula of the all kinds with cyclo Elkins. General formula for all kinds and psychological jeans is same. That is c. n. H two n -2. But these compounds differ in their structure. All kinds with this formula are is I clicked while psychlo Elkins with the same formula are sigh click in their structure. Example, the compound having molecular from last C three H four Can have two types of structure when it is a site click. As shown here Ch three C triple born C. H. This represents Altin and its name is propane And if the same number of items are all into Pharmacyclics structure as shown here CH two C. H double bond. Ch This compound has same molecular formula that is C3X4 but the structure is I click and this compound is cycle working known as psychlo drop in.


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