Choosing filter paper to extract an organic compound from HCl using gr

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Discussion Overview

The discussion revolves around the selection of filter paper for extracting an organic compound from hydrochloric acid (HCl). Participants explore the implications of pore size, the effectiveness of standard filter paper versus specialized filters, and the methods for ensuring successful filtration in a chemical context.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Experimental/applied

Main Points Raised

  • One participant questions whether any filter paper can effectively remove the organic compound while allowing smaller HCl molecules to pass through, given the molecular weight of the organic compound is "240."
  • Another participant suggests that standard filter paper may not be effective for soluble components in a mixture and recommends ultrafiltration techniques or phase separation methods instead.
  • A different participant proposes that if the solute is approximately 100 micrometers in size, paper filters with a pore size of 50 micrometers might suffice, but seeks clarification on whether a smaller size is necessary.
  • One participant expresses confidence in using a tested protocol and suggests checking the filtrate to assess the filtration effectiveness.
  • A question is raised about whether normal filter paper can withstand HCl or if specialized "hardened" or "ashless" filters are required.
  • Another participant indicates that the suitability of filter paper may depend on the concentration of HCl and advises checking with the manufacturer for guidance.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of standard filter paper versus specialized filters, and there is no consensus on the best approach for filtering the organic compound from HCl.

Contextual Notes

Participants mention various factors such as pore size, solute size, and HCl concentration, which may influence the filtration process, but these aspects remain unresolved in the discussion.

kl055
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Do I need to worry about the pore size, or can I just assume that any/all paper filter will remove the organic compound while letting the smaller HCl molecules through?

The molecular weight of the organic compound is listed as "240"
 
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I don't know that plain old filter paper would work on a soluble component of a mixture. Typically if you want to filter something in solution, you need to use ultrafiltration techniques (which have limits to how small the pores can get AFAIK) or find a way to separate the unwanted component into a separate phase (for example precipitation).
 
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If the solute is ~100um uniform in size (solid outside of the HCl), shouldn't paper filters work? Would be sufficient to use a pore size of 50um, or should I use a smaller size?
 
Sounds fine to me. If it were me, and I were working on an tested protocol, I'd check (qualitatively or quantitatively) the filtrate to get an idea of how well it worked.
 
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Thanks.

Is normal filter paper sufficient to resist HCl or should I be buying special "hardened" and/or "ashless" filters?
 
I'd imagine it depends on the concentration of HCl. Erring on the side if caution, you're best bet is likely to check with the manufacturer.
 
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Thanks, I will do that.
 

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