Polarity of Propan-1-ol and Propan-2-ol

  • Thread starter Thread starter organicchemistryyayy
  • Start date Start date
  • Tags Tags
    Polarity
AI Thread Summary
Propan-1-ol is considered more polar due to its electron distribution, with electrons drawn towards the end of the molecule, while propan-2-ol has a more centralized electron distribution. Despite this reasoning, the dipole moments reveal that propan-1-ol has a dipole moment of 1.487022 debye, whereas propan-2-ol has a slightly higher dipole moment of 1.555496 debye. The small difference in dipole moments suggests that a thorough analysis of the electronic structures of both molecules is necessary for a deeper understanding. The primary contribution to the dipole moment arises from the charge separation in the O-H bond, indicating that the hydrocarbon chain's influence is minimal in comparison. Additionally, differing experimental values from CCCBDB highlight the complexity of measuring these properties accurately.
organicchemistryyayy
Messages
1
Reaction score
0
TL;DR Summary
Dipole moment of propan-2-ol is higher but based on the molecular structure, I think propan-2-ol should be less polar.
Based on the two structures, I think Propan-1-ol is more polar because the electrons are drawn to the end of the molecule while propan-2-ol has electrons drawn to the center of the molecule (less of an unequal electron distribution in the molecule). However when looking at the dipole moment I see that propan-1-ol has a dipole moment of 1.487022 debye while propan-2-ol has a dipole moment of 1.555496. Can someone explain this to me.
 
Chemistry news on Phys.org
With such a tiny difference in dipole moments, the answer is going to come down to a detailed examination of the electronic structures of the two molecules. (Not sure where you got the values from; CCCBDB gives slightly different experimental values—1.55D and 1.58D) The lion’s share of the dipole moment will come from the charge separation in the O-H bond, and the hydrocarbon chain is a relatively small perturbation on that.
 
I want to test a humidity sensor with one or more saturated salt solutions. The table salt that I have on hand contains one of two anticaking agents, calcium silicate or sodium aluminosilicate. Will the presence of either of these additives (or iodine for that matter) significantly affect the equilibrium humidity? I searched and all the how-to-do-it guides did not address this question. One research paper I found reported that at 1.5% w/w calcium silicate increased the deliquescent point by...
I was introduced to the Octet Rule recently and make me wonder, why does 8 valence electrons or a full p orbital always make an element inert? What is so special with a full p orbital? Like take Calcium for an example, its outer orbital is filled but its only the s orbital thats filled so its still reactive not so much as the Alkaline metals but still pretty reactive. Can someone explain it to me? Thanks!!
I'm trying to find a cheap DIY method to etch holes of various shapes through 0.3mm Aluminium sheet using 5-10% Sodium Hydroxide. The idea is to apply a resist to the Aluminium then selectively ablate it off using a diode laser cutter and then dissolve away the Aluminium using Sodium Hydroxide. By cheap I mean resists costing say £20 in small quantities. The Internet has suggested various resists to try including... Enamel paint (only survived seconds in the NaOH!) Acrylic paint (only...
Back
Top