Enthalpy of formation of zinc acetate dihydrate

James T. Hughes; Alexandra Navrotsky

doi:10.1016/j.jct.2011.02.004

Enthalpy of formation of zinc acetate dihydrate

James T. Hughes, Alexandra Navrotsky

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

The enthalpy of formation of zinc acetate dihydrate (Zn(CH ₃COO)₂ · 2H₂O) was measured with respect to crystalline zinc oxide (ZnO), glacial acetic acid (CH₃COOH) and liquid water by room temperature solution calorimetry. The enthalpy of formation was verified by utilizing two independent thermodynamic cycles, using enthalpy of solution measurements in 5 mol · L^-1 sodium hydroxide (NaOH) and in 5 mol · L^-1 hydrochloric acid (HCl) solutions. The enthalpy of the reaction ZnO (cr) + 2CH₃COOH (l) + H₂O (l) to form Zn(CH₃COO)₂ · 2H₂O (cr) is -(65.78 ± 0.36) kJ · mol^-1 for measurements in 5 mol · L^-1 NaOH and -(66.25 ± 0.17) kJ · mol ^-1 for measurements in 5 mol · L^-1 HCl. The standard enthalpy of formation of Zn(CH₃COO)₂ · 2H₂O from the elements is -(1669.35 ± 1.30) kJ · mol^-1. This work provides the first calorimetric measurement of the enthalpy of formation of Zn(CH₃COO)₂ · 2H ₂O.

Original language	English (US)
Pages (from-to)	980-982
Number of pages	3
Journal	Journal of Chemical Thermodynamics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1016/j.jct.2011.02.004
State	Published - Jun 2011
Externally published	Yes

Keywords

Enthalpy of formation
Solution calorimetry
Zinc acetate

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Physical and Theoretical Chemistry

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10.1016/j.jct.2011.02.004

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title = "Enthalpy of formation of zinc acetate dihydrate",

abstract = "The enthalpy of formation of zinc acetate dihydrate (Zn(CH 3COO)2 · 2H2O) was measured with respect to crystalline zinc oxide (ZnO), glacial acetic acid (CH3COOH) and liquid water by room temperature solution calorimetry. The enthalpy of formation was verified by utilizing two independent thermodynamic cycles, using enthalpy of solution measurements in 5 mol · L-1 sodium hydroxide (NaOH) and in 5 mol · L-1 hydrochloric acid (HCl) solutions. The enthalpy of the reaction ZnO (cr) + 2CH3COOH (l) + H2O (l) to form Zn(CH3COO)2 · 2H2O (cr) is -(65.78 ± 0.36) kJ · mol-1 for measurements in 5 mol · L-1 NaOH and -(66.25 ± 0.17) kJ · mol -1 for measurements in 5 mol · L-1 HCl. The standard enthalpy of formation of Zn(CH3COO)2 · 2H2O from the elements is -(1669.35 ± 1.30) kJ · mol-1. This work provides the first calorimetric measurement of the enthalpy of formation of Zn(CH3COO)2 · 2H 2O.",

keywords = "Enthalpy of formation, Solution calorimetry, Zinc acetate",

author = "Hughes, {James T.} and Alexandra Navrotsky",

note = "Funding Information: This work was supported by a grant from the National Science Foundation ( DMR-0601892 ). We thank Christopher Armstrong and Diana M. Wong for helpful feedback during the preparation of this manuscript. ",

year = "2011",

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doi = "10.1016/j.jct.2011.02.004",

language = "English (US)",

volume = "43",

pages = "980--982",

journal = "Journal of Chemical Thermodynamics",

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publisher = "Academic Press Inc.",

number = "6",

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T1 - Enthalpy of formation of zinc acetate dihydrate

AU - Hughes, James T.

AU - Navrotsky, Alexandra

N1 - Funding Information: This work was supported by a grant from the National Science Foundation ( DMR-0601892 ). We thank Christopher Armstrong and Diana M. Wong for helpful feedback during the preparation of this manuscript.

PY - 2011/6

Y1 - 2011/6

N2 - The enthalpy of formation of zinc acetate dihydrate (Zn(CH 3COO)2 · 2H2O) was measured with respect to crystalline zinc oxide (ZnO), glacial acetic acid (CH3COOH) and liquid water by room temperature solution calorimetry. The enthalpy of formation was verified by utilizing two independent thermodynamic cycles, using enthalpy of solution measurements in 5 mol · L-1 sodium hydroxide (NaOH) and in 5 mol · L-1 hydrochloric acid (HCl) solutions. The enthalpy of the reaction ZnO (cr) + 2CH3COOH (l) + H2O (l) to form Zn(CH3COO)2 · 2H2O (cr) is -(65.78 ± 0.36) kJ · mol-1 for measurements in 5 mol · L-1 NaOH and -(66.25 ± 0.17) kJ · mol -1 for measurements in 5 mol · L-1 HCl. The standard enthalpy of formation of Zn(CH3COO)2 · 2H2O from the elements is -(1669.35 ± 1.30) kJ · mol-1. This work provides the first calorimetric measurement of the enthalpy of formation of Zn(CH3COO)2 · 2H 2O.

AB - The enthalpy of formation of zinc acetate dihydrate (Zn(CH 3COO)2 · 2H2O) was measured with respect to crystalline zinc oxide (ZnO), glacial acetic acid (CH3COOH) and liquid water by room temperature solution calorimetry. The enthalpy of formation was verified by utilizing two independent thermodynamic cycles, using enthalpy of solution measurements in 5 mol · L-1 sodium hydroxide (NaOH) and in 5 mol · L-1 hydrochloric acid (HCl) solutions. The enthalpy of the reaction ZnO (cr) + 2CH3COOH (l) + H2O (l) to form Zn(CH3COO)2 · 2H2O (cr) is -(65.78 ± 0.36) kJ · mol-1 for measurements in 5 mol · L-1 NaOH and -(66.25 ± 0.17) kJ · mol -1 for measurements in 5 mol · L-1 HCl. The standard enthalpy of formation of Zn(CH3COO)2 · 2H2O from the elements is -(1669.35 ± 1.30) kJ · mol-1. This work provides the first calorimetric measurement of the enthalpy of formation of Zn(CH3COO)2 · 2H 2O.

KW - Enthalpy of formation

KW - Solution calorimetry

KW - Zinc acetate

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Enthalpy of formation of zinc acetate dihydrate

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