An ampoule with 290 mg N₂04 was introduced into a quartz vessel of volume 500.0 mL. The vessel was evacuated, and then the ampoule was smashed (its volume can be neglected). The gas pressure in the vessel was measured to be 161.0 mm Hg at 25 °C, and to be 181.0 mm Hg at 35 °C. Find deltaH (in kcal) for the dissociation of 1 mole of N204 at about 30 °C. The thermal expansion of the vessel, and the variation of deltaH with temperature are neglected.

An ampoule with 290 mg N₂04 was introduced into a quartz vessel of volume 500.0 mL. The vessel was evacuated, and then the ampoule was smashed (its volume can be neglected). The gas pressure in the vessel was measured to be 161.0 mm Hg at 25 °C, and to be 181.0 mm Hg at 35 °C. Find deltaH (in kcal) for the dissociation of 1 mole of N204 at about 30 °C. The thermal expansion of the vessel, and the variation of deltaH with temperature are neglected.

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter11: Solutions

Section: Chapter Questions

Problem 18P

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