2 questions (one ochem and one pchem)

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Discussion Overview

The discussion revolves around two questions: one related to organic chemistry, specifically the epimerization process involving potassium carbonate, and the other concerning physical chemistry, focusing on calculating molecular mass using gas laws.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant inquires about the mechanism of epimerization with potassium carbonate, questioning whether it acts as a base to deprotonate a hydrogen and if refluxing leads to an epimer.
  • Another participant seeks clarification on the definition of an epimer.
  • Several participants suggest that an epimer involves the switching of a hydrogen atom's position relative to the plane of the molecule.
  • In the physical chemistry question, participants discuss the application of the ideal gas law (PV=nRT) to calculate molecular mass from given conditions of gas volume, temperature, and pressure.
  • One participant notes that it is probably safe to assume ideal behavior for the gas unless stated otherwise.

Areas of Agreement / Disagreement

There is no clear consensus on the mechanism of epimerization or the definition of an epimer, as participants provide varying interpretations. The application of the ideal gas law appears to be generally accepted, but the specifics of its application remain open for discussion.

Contextual Notes

Participants have not fully defined assumptions regarding the epimerization process or the conditions under which the ideal gas law applies. There are also unresolved aspects of the molecular mass calculation related to the specific gas behavior.

Who May Find This Useful

This discussion may be useful for students or individuals interested in organic chemistry mechanisms, definitions related to stereochemistry, and applications of gas laws in physical chemistry.

boramhuh
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For organic chemistry, in an experiment,
how does the epimerization (of H) of Potassium carbonate work?
Does carbonate work as a base and deprotonate a hydrogen and then by refluxing it
do you get an epimer?

For the pchem part,
If the 3.0g of gas occupies 11.2L at 0.0C and 0.25 atm, then what would be the molecular mass?

Do you apply the infamous PV=nRT here? :{

Thank you in advance!
 
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boramhuh said:
For organic chemistry, in an experiment,
how does the epimerization (of H) of Potassium carbonate work?
Does carbonate work as a base and deprotonate a hydrogen and then by refluxing it
do you get an epimer?

What is the definition of an epimer?

boramhuh said:
For the pchem part,
If the 3.0g of gas occupies 11.2L at 0.0C and 0.25 atm, then what would be the molecular mass?

Do you apply the infamous PV=nRT here? :{

Thank you in advance!

That's one way to start, yes...
 
I guess epimer in this case is the hydrogen atom switching its place from coming out of the plane to directing towards the back of the plane.
 
boramhuh said:
I guess epimer in this case is the hydrogen atom switching its place from coming out of the plane to directing towards the back of the plane.

Perhaps see http://www.chem.qmul.ac.uk/iupac/gtpoc/E.html#43 , I am not sure what you mean by this...
 
Last edited by a moderator:
boramhuh said:
For organic chemistry, in an experiment,
For the pchem part,
If the 3.0g of gas occupies 11.2L at 0.0C and 0.25 atm, then what would be the molecular mass?

Do you apply the infamous PV=nRT here? :{

Thank you in advance!

Its probably safe to assume ideal behavior unless otherwise indicated.
 

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