Chemical Forums

Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: dsk123 on September 04, 2020, 02:40:47 AM

Title: substitution reactions
Post by: dsk123 on September 04, 2020, 02:40:47 AM

when cyclohexanol bonds does a substitution reaction with PBr3, why does a Br atom remove from the chain? Doesn't phosphorus make 5 bonds in total?

Another question is how does the detachment of the H atom gets the oxygen to become neutral charge? Lastly, how does Nitrogen from the pyridine take the H atom if Nitrogen is already bonded to 3 pairs in the pyridine?

Thank you for answering. :)

Title: Re: substitution reactions
Post by: Babcock_Hall on September 04, 2020, 02:29:31 PM

It is a forum rule that you must provide your attempt to answer before we can help you.  I will try to get you started, however.  It is important to distinguish between a hydrogen atom and a proton.  The rules that you learned about formal charges on atoms are valuable in deciding which atoms have positive charges, which have negative charges, and which are neutral.