When 49.38 g of potassium fluoride (Mw=58.097 gmol-1) was dissolved in 1.00 dm3 of water at a temperature of 25 °C, the temperature of the solution increased by 3.61 degrees. Calculate the heat transferred between the system and the environment and the molar enthalpy of dissolution of the compound ΔsHm. Assume that the density and specific heat capacity of the solution are the same as water: C=4.18 J°C-1g-1 and d=1.0 kgdm-3 the calorimeter heat capacity was −5157.9J/K

When 49.38 g of potassium fluoride (Mw=58.097 gmol-1) was dissolved in 1.00 dm3 of water at a temperature of 25 °C, the temperature of the solution increased by 3.61 degrees. Calculate the heat transferred between the system and the environment and the molar enthalpy of dissolution of the compound ΔsHm. Assume that the density and specific heat capacity of the solution are the same as water: C=4.18 J°C-1g-1 and d=1.0 kgdm-3 the calorimeter heat capacity was −5157.9J/K

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 65QRT

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