H2O..HCO3 Anion - The NIST WebBook

H2O..HCO3 anion

• Formula: CH3O4-
• Molecular weight: 79.0327
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Ion clustering data
  • References
  • Notes
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Gas phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Quantity	Value	Units	Method	Reference	Comment
ΔfH°gas	-1052.7	kJ/mol	Ther	Keesee, Lee, et al., 1979

Reaction thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

CH3O4- + 2 = CH5O5-

By formula: CH3O4- + 2H2O = CH5O5-

Quantity	Value	Units	Method	Reference	Comment
ΔrH°	62.34 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase
Quantity	Value	Units	Method	Reference	Comment
ΔrG°	26. ± 4.2	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase

CHO3- + = CH3O4-

By formula: CHO3- + H2O = CH3O4-

Quantity	Value	Units	Method	Reference	Comment
ΔrH°	65.69 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase
Quantity	Value	Units	Method	Reference	Comment
ΔrG°	35.6 ± 1.7	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase

Ion clustering data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

CHO3- + = CH3O4-

By formula: CHO3- + H2O = CH3O4-

Quantity	Value	Units	Method	Reference	Comment
ΔrH°	65.69 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase
Quantity	Value	Units	Method	Reference	Comment
ΔrG°	35.6 ± 1.7	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase

CH3O4- + 2 = CH5O5-

By formula: CH3O4- + 2H2O = CH5O5-

Quantity	Value	Units	Method	Reference	Comment
ΔrH°	62.34 ± 0.84	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase
Quantity	Value	Units	Method	Reference	Comment
ΔrG°	26. ± 4.2	kJ/mol	TDAs	Keesee, Lee, et al., 1979	gas phase

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Keesee, Lee, et al., 1979 Keesee, R.G.; Lee, N.; Castleman Jr., Properties of Clusters in the Gas Phase. 3. Hydration Complexes of CO3- and HCO3-, J. Am. Chem. Soc., 1979, 101, 10, 2599, https://doi.org/10.1021/ja00504a015 . [all data]

Notes

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, References

• Symbols used in this document:

  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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