An instant hot pack is a plastic bag with 15 g of the salt calcium chloride (CaCl₂) and an inner bag filled with 200 g of water. Squeezing the pack to break the inner bag causes the calcium chloride to dissolve in the water, which quickly increases the water temperature. The dissociation of the ionic compound is 14,0 CaCl₂ (s) Ca² (aq) + 2Cl(aq). Assume the reaction begins at 25°C and 1 atm pressure. Calcium chloride has a molar mass of 0.111 kg/mol. The specific heat of the salt solution is 3800 J/kg-K. Data on the enthalpies of formation and standard molar entropies of the salt and the ions are listed here: H; (kJ/mol) S (J/mol-K) -365 6 CaCl₂ (s) Ca³- (aq) -133.3 Cl(aq) -206.9 151.1 113.4 146.4 What temperature will the water reach? Express your answer in degrees Celsius. 195] ΑΣΦΑ T₁- Submit Request Answer Part B What is the change in the Gibbs free energy? Express your answer with the appropriate units. AG- Value Units ? "C

An instant hot pack is a plastic bag with 15 g of the salt calcium chloride (CaCl₂) and an inner bag filled with 200 g of water. Squeezing the pack to break the inner bag causes the calcium chloride to dissolve in the water, which quickly increases the water temperature. The dissociation of the ionic compound is 14,0 CaCl₂ (s) Ca² (aq) + 2Cl(aq). Assume the reaction begins at 25°C and 1 atm pressure. Calcium chloride has a molar mass of 0.111 kg/mol. The specific heat of the salt solution is 3800 J/kg-K. Data on the enthalpies of formation and standard molar entropies of the salt and the ions are listed here: H; (kJ/mol) S (J/mol-K) -365 6 CaCl₂ (s) Ca³- (aq) -133.3 Cl(aq) -206.9 151.1 113.4 146.4 What temperature will the water reach? Express your answer in degrees Celsius. 195] ΑΣΦΑ T₁- Submit Request Answer Part B What is the change in the Gibbs free energy? Express your answer with the appropriate units. AG- Value Units ? "C

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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