Calculate the enthalpy change for the dissolution of (NH4)2SO4(s) using the enthalpy of formation data provided below: (remember to write the balanced equation for the dissolution reaction including state symbols). Explain how the value obtained here might be different from the value obtained using calorimetry. Compound Enthalpies of formation (kJmol-1) (NH4)2SO4 (s) -1380.9 (NH4)+ (aq) -143.5 (SO4)2- (aq) -1009.0

Calculate the enthalpy change for the dissolution of (NH4)2SO4(s) using the enthalpy of formation data provided below: (remember to write the balanced equation for the dissolution reaction including state symbols). Explain how the value obtained here might be different from the value obtained using calorimetry. Compound Enthalpies of formation (kJmol-1) (NH4)2SO4 (s) -1380.9 (NH4)+ (aq) -143.5 (SO4)2- (aq) -1009.0

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 68E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...

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(ii) Calculate the enthalpy change for the dissolution of (NH4)2SO4(s) using the enthalpy of formation data provided below: (remember to write the balanced equation for the dissolution reaction including state symbols). Explain how the value obtained here might be different from the value obtained using calorimetry. (Show working as this question will be assessed using grade descriptors 1, 3 & 7) Compound Enthalpies of formation (kJmol-1) (NH4)2SO4 (s) -1380.9 (NH4)+ (aq) -143.5 (SO4)2- (aq) -1009.0
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