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It is not the case that Distinct compounds sharing the same elements but differing in combining proportions can be distinguished by their chemical formulas
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Reasons For
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Reason for 1 of 2
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1.
Chemical formulas are theory-laden representations whose distinguishing power depends on prior acceptance of Daltonian atomism.
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2.
Historically, equivalent-weight chemistry (Wollaston, Geoffroy) systematized distinct compounds without atomic formulas, showing formulas are not uniquely necessary for distinction.
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3.
Therefore, formulas distinguish compounds only relative to a theoretical framework, not as a framework-independent fact about the compounds themselves.
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Reason for 2 of 2
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1.
Structural isomers share identical molecular formulas (e.g., C2H6O for both ethanol and dimethyl ether) yet are chemically distinct compounds.
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2.
If distinct compounds can share the same chemical formula, then formulas are insufficient as the distinguishing criterion the claim requires.
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Reasons Against
1 perspective
Reason against
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1.
The law of constant proportions holds for chemical compounds
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2.
Different combining proportions are represented by distinct chemical formulas (e.g., N2O, NO, N2O3)
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