The Stury of Photoelectrochemical Polymerization of Pyrrole on Metal Substractes

Chon, Y. Z.; Xu, Kui; Tian, Zhong‐Qun; 田昭武,

doi:10.3866/pku.whxb19910515

Acta Physico-Chimica Sinica

1991

DOI: 10.3866/pku.whxb19910515

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The Stury of Photoelectrochemical Polymerization of Pyrrole on Metal Substractes

Y. Z. Chon¹,

Kui Xu²,

Zhong‐Qun Tian³

et al.

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2004

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Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter

Tan

Gao

et al. 2004

J. Chem. Eng. Data

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An isoperibol solution-reaction calorimeter suitable for measuring molar enthalpies of solid-liquid and liquid-liquid interactions was constructed. The volume of calorimetric vessel made by transparent hard glass is about 100 cm 3 . Its energy equivalent is 0.48 kJ‚K -1 when containing 100 cm 3 of double distilled water. The thermal leakage modulus is 2.7 × 10 -4 s -1 . The time constant of the calorimeter is about 2.9 s. The precision of controlling and measuring the temperature is within (0.001 K and (0.0001 K, respectively. The performance of the calorimeter was tested by measuring the enthalpy of dissolution of KCl in double distilled water, ∆ s H m,KCl 0 ) (17 547 ( 13 J‚mol -1 ) at T ) (298.15 ( 0.001) K, and the measuring uncertainty was estimated to be within (0.30% by comparing our measured value with the reference. Molar enthalpies of dissolution of the {ZnCl 2 (s) + L-His(s)} mixture and the complex Zn(His)-Cl 2 ‚ 1 / 2 H 2 O(s) in 100 cm 3 of 2 mol‚L -1 HCl at T ) (298.15 ( 0.001) K have been measured to be ∆ d H m,1 0 ) (26.419 ( 0.019) kJ‚mol -1 and ∆ d H m,2 0 ) (11.862 ( 0.009) kJ‚mol -1 , respectively, by means of the isoperibol solution-reaction calorimeter. The standard molar enthalpy of formation of the complex Zn-(His)Cl 2 ‚ 1 / 2 H 2 O(s) has been derived to be3) kJ‚mol -1 by the combination of the experimental values of enthalpies of dissolution with some auxiliary thermodynamic data through a designed Hess thermochemical cycle on the basis of a supposed chemical reaction.

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Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter

Tan

Gao

et al. 2004

J. Chem. Eng. Data

View full text Add to dashboard Cite

show abstract

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The Stury of Photoelectrochemical Polymerization of Pyrrole on Metal Substractes

Cited by 1 publication

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Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter

Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter

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The Stury of Photoelectrochemical Polymerization of Pyrrole on Metal Substractes

Cited by 1 publication

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Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl2·/2H2O(s) by an Isoperibol Solution−Reaction Calorimeter

Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl2·/2H2O(s) by an Isoperibol Solution−Reaction Calorimeter

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Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter

Determination of Standard Molar Enthalpy of Formation for the Coordination Compound Zn(His)Cl₂·/₂H₂O(s) by an Isoperibol Solution−Reaction Calorimeter