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Citation: Liu Shi-Jun, Chen Qi-Yuan, Zhang Ping-Min. Thermal Decomposition of Monoclinic Ammonium Paratungstate[J]. Acta Physico-Chimica Sinica, ;2000, 16(11): 1048-1052. doi: 10.3866/PKU.WHXB20001116 shu

Thermal Decomposition of Monoclinic Ammonium Paratungstate

1.
Department of Chemistry,Xiangtan University,Xiangtan 411105

Received Date: 27 January 2000
Available Online: 15 November 2000

The heat of the thermal decomposition of monoclini c ammonium paratungstate, (NH4)10H2W12O42•4H2O, was measured in a HT-1000 microcalorimeter using three-step calorimetry and suitable thermochemical cycle. The standard enthalpy of the thermal decomposition reaction at 298.15 K and the standard enthalpy of formation at 298.15 K for monoclinic ammonium paratung-state were obtained to be (430.1± 10.2) kJ•mol－ 1 and－ (13 423.7±14.8) kJ•mol－ 1, respectively.
- Monoclinic ammonium paratungstate,
- Thermal decomposition,
- Calorimetry
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