Destroyer GC #240

[MowgliR]

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How many isomers [constitutional] can be drawn for C4H10O?



Rather than drawing all of them out, is there a faster way to determine the number of isomers?

 

[nyr201]

How many isomers [constitutional] can be drawn for C4H10O?



Rather than drawing all of them out, is there a faster way to determine the number of isomers?

yes there is....its derived from Cn H2n+2 but u really cant figure it out on ur own (the math is complex as one source explains) so instead u can find a table of # of n and the amt of isomers per for instance for n 1-3 there exists 1 isomer n=4 has 2 isomers (your answer) n=5 has 3 isomers, n=6 has 5 isomers, n=7 has 9 isomers and n=8 has 18 isomers....u really don't need to know beyond this as the next one 9 has 35 isomers!!! and n= 10 has 75 isomers!! lol.

if u want to read more on this just google Cn H2n+2 and the 2nd link (the pdf) is where i got this info from i just dunno how to post a pdf lol its on the 2nd and 3rd page if it!

 

[LuckMC11]

its 2 even though there is an O in there?!

 

[rnbaxter]

its 2 even though there is an O in there?!

Wrong.. There are 4 constitutional isomers.

 

[nyr201]

sorry the O affects it differently what i said was for just a plain alkane and the answer is 7 at least that whats destroyer says...idk a faster way w the O in there someone enlighten us please

 

[shahinc]

Is DAT Destroyer just collection of questions or does it have lecture notes or ... as well ?

 

[rnbaxter]

sorry the O affects it differently what i said was for just a plain alkane and the answer is 7 at least that whats destroyer says...idk a faster way w the O in there someone enlighten us please

The fast way is to draw them out it took me exactly 15 seconds. It is a simple 4C molecule... A 7 C may take more like 40seconds.

 

[rmm30]

im getting 3. diethyl ether, methoxypropane, methoxy isopropane? what is the 4th?

 

[chippy]

the fourth is methyl propyl ether

 

[UCB05]

im getting 3. diethyl ether, methoxypropane, methoxy isopropane? what is the 4th?

1-butanol
2-butanol
2-methyl-1-propanol
2-methyl-2-propanol
methyl propyl ether
diethyl ether
methyl isopropyl ether