What chemical side bonds are formed when two sulfur-type chain...

Question

What chemical side bonds are formed when two sulfur-type chains are joined together?

Accepted Answer

Welcome back everyone. What is the name of the functional group that is formed when the oxygen in the hydroxyl group of an alcohol is replaced with a sulfur atom. Choice A states ester choice B states, Ether Choice C states Diol and Choice D states di sulfide. So let's begin by recalling what first choice A looks like with an ester functional group. Let's recall that for an ester functional group, the condensed format is R coo R prime where the RS represent alkyl chains. So we would have an alkyl chain which is bonded to a carbon carbon where that carbon carbon is double bonded to oxygen. And as a whole that carbon double bonded to oxygen represents our Carboni group. That Carboni group is then bonded to where that carbon carbon rather is bonded to an oxygen, which is bonded to another al chain, which we'll say is our prime. Now, we do not have the presence of a hydroxyl group, which we should recall is characterized by oxygen bonded to hydrogen. Thus, we can rule out choice A since we need to consider a functional group with a hydroxyl group being replaced with a sulfur. So Now, in choice B, we have an ether. Let's recall that for the condensed form of ether, we have R and alch chain bonded to oxygen where that oxygen is bonded to a second alch chain R prime. Again, we lack the presence of a hydroxyl group. So we would rule out choice B. Next we have choice C which lists a thol. So for a thol, let's recall that its condensed formula would be an alkyl chain or our group bonded to sulfur bonded to a hydrogen atom. Since we recognize that the condensed form of a hydroxyl group is O H, we can observe that the style group likely replaced the oxygen with the sulfur atom. So we have an R group bonded to a sulfur atom which is bonded to hydrogen. And this sulfur bonded to hydrogen group, we can list as a sulf hydro self hydro group, sulfur bonded to hydrogen and as a whole R S H or an alkyl chain bonded to a sulf hydro group represents a thol. So we would put a checkmark by choice C since we can observe that our hydroxyl group was replaced or replaced the oxygen with the sulfur atom to form a sulf hydro group. And overall A thol, since it's bonded to an alkyl chain or our group. Next, we have choice D which lists a di sulfide. Let's recall that the condensed formula for a di sulfide functional group would be an alkyl chain or R group bonded to a sulfur atom bonded to another sulfur atom which is bonded to a second alkyl chain or our group R prime. Now note that the sulfur atoms in this case are also sulfhydryl groups. So we have an alkyl chain bonded to a sulfur which is bonded to a hydrogen, that sulfur is then that sulf hydro rather is then bonded to a second sulf hydro group or sulfur bonded to hydrogen. And then that second sulf hydro group is bonded to a differing alkyl chain or R prime. And as a whole, this represents our di sulfide group consisting of two sulf hydros. So choice D contains too many sulfhydryl groups. So we would rule out choice D and this leaves us with choice C as our final answer for the name of the functional group being thol, where an oxygen in a hydroxy group of an alcohol is replaced with a sulfur atom where that sulfur atom now bonded to hydrogen represents a sulfhydryl group. So again, C thol is our final answer. I hope this made sense. And let us know if you have any questions.

Struggling with General Chemistry?

What chemical side bonds are formed when two sulfur-type chains are joined together?

Watch next

Functional Groups in Chemistry practice set