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the claim

The volumes or weights of two mixed liquids do not always sum additively due to intermolecular packing

the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

The volumes of mixed liquids frequently exhibit nonadditive behavior, resulting in positive or negative excess molar volumes due to intermolecular interactions and packing effects.

The analysis

The claim is specific, empirical, and testable. Multiple retrieved studies report non-ideal volumetric behavior (excess molar volumes) in various mixed liquid systems, directly confirming that liquid volumes do not always sum additively and attributing this to molecular packing and intermolecular forces.

Evidence for · 5
Investigation of propyl ethanoate + C<sub>6</sub>-C<sub>10</sub> 1-alkanols: experimental properties, molecular dynamics, and quantum chemical insights.
Recorded source metadata

Almasi M, Vatanparast M, Noubigh A. Investigation of propyl ethanoate + C<sub>6</sub>-C<sub>10</sub> 1-alkanols: experimental properties, molecular dynamics, and quantum chemical insights.. 2026. https://doi.org/10.1039/d6ra01677d

Paper 0 demonstrates nonadditive mixing behaviors resulting from excess molar volumes and free volume changes driven by intermolecular packing and hydrogen bonding in ester-alkanol mixtures.

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More for · 4
Molecular-level interactions governed by temperature and composition in double salt ionic liquid-water systems.
Recorded source metadata

Rahman KMG, Hossain M, Susan MABH. Molecular-level interactions governed by temperature and composition in double salt ionic liquid-water systems.. 2026. https://doi.org/10.1039/d6ra00801a

Paper 1 shows non-ideal volumetric behavior and altered free volume through disrupted packing in ionic liquid-water systems.

Dissecting Molecular Interactions in Aqueous Deep Eutectic Solvents: A Multi-Scale Study of Choline- and Acetylcholine-Based Propylene Glycol Isomers.
Recorded source metadata

Warmińska D, Sutkowska A, Jamrógiewicz M, Cysewski P. Dissecting Molecular Interactions in Aqueous Deep Eutectic Solvents: A Multi-Scale Study of Choline- and Acetylcholine-Based Propylene Glycol Isomers.. 2026. https://doi.org/10.1021/acs.jpcb.5c08377

Paper 5 highlights that excess molar volumes in aqueous deep eutectic solvents stem from intermolecular forces and molecular packing effects.

Thermophysical and Transport Properties of Ethanolammonium Carboxylate Protic Ionic Liquids in Water and Dimethyl Sulfoxide.
Recorded source metadata

Dhage KS, Bhoite RN, Pagar NS, Musale SP. Thermophysical and Transport Properties of Ethanolammonium Carboxylate Protic Ionic Liquids in Water and Dimethyl Sulfoxide.. 2026. https://doi.org/10.1021/acsomega.5c13309

Paper 7 reports nonadditive volume changes (negative excess molar volumes) governed by intermolecular packing and molecular interactions in binary ionic liquid mixtures.

Excess molar volume and isentropic compressibility for binary or ternary ionic liquid systems
Recorded source metadata

Indra Bahadur. Excess molar volume and isentropic compressibility for binary or ternary ionic liquid systems. https://doi.org/10.51415/10321/559

Paper 8 discusses ternary and binary excess molar volumes attributed to packing effects and intermolecular interactions.

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first checked01 Aug 2026
judged → SUPPORTED · 7501 Aug 2026
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