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This summary is machine-generated.

This study reliably quantified aqueous ion volumes using solution density, finding higher values than previously reported. This provides a dependable list of ion volumes for 24 ions in solution.

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Area of Science:

  • Physical Chemistry
  • Solution Chemistry

Background:

  • Quantifying aqueous ion volumes is crucial but challenging.
  • Existing methods for determining ion volumes have limitations.

Purpose of the Study:

  • To reliably quantify partial molar volumes of 48 salts and their constituent ions in aqueous solution.
  • To establish a dependable list of ion volumes with uncertainty ranges.

Main Methods:

  • Utilized an uncommon approach focusing on the initial slope of solution density versus molarity.
  • Careful data analysis was employed for accurate quantification.

Main Results:

  • Partial molar volumes for 48 salts were quantified and found to be higher than previously reported.
  • A reliable list of volumes for 24 constituent ions was generated.
  • Specific ion volumes (mL/mol) were determined, e.g., sodium (4.0 ± 0.2), chloride (12.6 ± 0.2).

Conclusions:

  • The developed method provides reliable aqueous ion volumes.
  • The findings offer a valuable resource for researchers in solution chemistry.
  • The technique is extendable to a wider range of ions.