All the parts of this problem refer to the alkane having the carbon skeleton shown.
(d) How many carbon atoms are primary? Secondary? Tertiary? Quaternary?
Hey everyone. So, in this carbon chain that's on the right and it is other representation of it, we are going to be identifying the primary, secondary, tertiary and quaternary cartons. So, just remember what all of these terms are referred to. Now, primary one would be a carbon that's attached to one other carbon, so for example, something like this, this would be a primary carbon because it's only attached to carbon number two. Now, for a secondary could be a carbon that's attached to two other carbons, so for example, that would be something like that. Now that's attached to three other carbons give you one like this one, okay? So this one was, I call this a secondary one in blue and in yellow we're going to count how many primary ones we have, so the primary ones would be the ones that have three hydrogen's on it, right? Because that means the other bond would be to another carbon, so we can have this one be a primary carbon, that's three and where are the last two and I can highlight them over here, these are the ones we've done so far, we need one of these dots or one of these circles, right? The carbons that are attached to one other one, would be the two other muscle groups guys, right? Right here and that's right here in right here. So, in total we have five of those. Now, go ahead and try to find the ones for secondary, tertiary and quaternary, quaternary be a carbon, right? That's attached to four other groups, right? Four other carbons such as an example of what quaternary would be and what I've noticed is do we have any quaternary carbons? Well, no, right? We only have up to tertiary, so let's start, we did primary, let's go ahead and finish up secondary, so if it is attached to two other carbons that would be this one right here, that one's going to be secondary, this one is attached to other carbons one here and one here, same thing that would be this one and this one, we would have this one attached to two other carbons, same thing here, right? Attached to this carbon and this one and same thing here, it's attached to this carbon and this one. So, how many is that? there's five there. So, five secondary carbons, we said we have zero quaternary, right? Zero, this one. So, last one is going to be tertiary a carbon now attached to, is going to have a CH and then three other bonds, right? So that's going to be this one, this one and this one, okay? So the last three that are left. Alright guys, that's it to this question, we're just looking for again the primary, secondary and tertiary carbons, right? So hopefully that makes sense.