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ReactionBalancedQ[rxn]

returns True if the given chemical reaction is balanced, and False otherwise.

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ReactionBalancedQ

ReactionBalancedQ[rxn]

returns True if the given chemical reaction is balanced, and False otherwise.

Details

  • rxn should be a ChemicalReaction object.
  • A reaction is balanced if the element counts and net charge for the reactants and products are equal.

Examples

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Basic Examples  (2)

Test an unbalanced reaction:

Wolfram Language code: ReactionBalancedQ[ChemicalReaction["FeCl2 + Na3PO4 -> Fe3(PO4)2 + NaCl"]]

Test a balanced reaction:

Wolfram Language code: ReactionBalancedQ[ChemicalReaction["3FeCl2 + 2Na3PO4 -> Fe3(PO4)2 + 6NaCl"]]

A reaction is balanced only if charges and mass are balanced:

Wolfram Language code: ReactionBalancedQ[ChemicalReaction["Cu+(aq) + Fe(s) → Fe+3(aq) + Cu(s)"]]

Balancing the reaction will account for the charges

Wolfram Language code: ReactionBalance[ChemicalReaction["Cu+(aq) + Fe(s) → Fe+3(aq) + Cu(s)"]]

Neat Examples  (1)

A reaction that can be balanced by different sets of coefficients:

Wolfram Language code: ReactionBalancedQ /@ {ChemicalReaction[Association[ChemicalFormula[{"C" -> 1, "O" -> 1}] -> 1, ChemicalFormula[{"C" -> 1, "O" -> 2}] -> 1, ChemicalFormula[{"H" -> 2}] -> 7] -> Association[ChemicalFormula[{"C" -> 1, "H" -> 4}] -> 2, ChemicalFormula[{"H" -> 2, "O" -> 1}] -> 3]], ChemicalReaction[Association[ChemicalFormula[{"C" -> 1, "O" -> 1}] -> 2, ChemicalFormula[{"C" -> 1, "O" -> 2}] -> 1, ChemicalFormula[{"H" -> 2}] -> 10] -> Association[ChemicalFormula[{"C" -> 1, "H" -> 4}] -> 3, ChemicalFormula[{"H" -> 2, "O" -> 1}] -> 4]], ChemicalReaction[Association[ChemicalFormula[{"C" -> 1, "O" -> 1}] -> 1, ChemicalFormula[{"C" -> 1, "O" -> 2}] -> 2, ChemicalFormula[{"H" -> 2}] -> 11] -> Association[ChemicalFormula[{"C" -> 1, "H" -> 4}] -> 3, ChemicalFormula[{"H" -> 2, "O" -> 1}] -> 5]]}

ReactionBalance finds the one with the lowest sum of coefficients:

Wolfram Language code: ReactionBalance[ChemicalReaction[Association[ChemicalFormula[{"C" -> 1, "O" -> 1}] -> 1, ChemicalFormula[{"C" -> 1, "O" -> 2}] -> 1, ChemicalFormula[{"H" -> 2}] -> 1] -> Association[ChemicalFormula[{"C" -> 1, "H" -> 4}] -> 1, ChemicalFormula[{"H" -> 2, "O" -> 1}] -> 1]]]
Wolfram Research (2021), ReactionBalancedQ, Wolfram Language function, https://reference.wolfram.com/language/ref/ReactionBalancedQ.html.

Text

Wolfram Research (2021), ReactionBalancedQ, Wolfram Language function, https://reference.wolfram.com/language/ref/ReactionBalancedQ.html.

CMS

Wolfram Language. 2021. "ReactionBalancedQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ReactionBalancedQ.html.

APA

Wolfram Language. (2021). ReactionBalancedQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ReactionBalancedQ.html

BibTeX

@misc{reference.wolfram_2026_reactionbalancedq, author="Wolfram Research", title="{ReactionBalancedQ}", year="2021", howpublished="\url{https://reference.wolfram.com/language/ref/ReactionBalancedQ.html}", note=[Accessed: 13-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_reactionbalancedq, organization={Wolfram Research}, title={ReactionBalancedQ}, year={2021}, url={https://reference.wolfram.com/language/ref/ReactionBalancedQ.html}, note=[Accessed: 13-June-2026]}