5. EXERCISES Activity 1: Solve Me! Direction: Solve the given problem below. Write your answer on a separate sheet of paper. 1. Calculate the entropy change AS'universe for the following reaction, at 25 C. CO + 2H2 CH,OH Standard entropy, AS CO- 197.7 J/mol-K Ha 130.7 J/mol-K CH,OH = 127.2 J/mol-K Standard enthalpy of formation, AH? CO -110.5 kJ/mol Had - 0 kJ/mol CH3OH = -238.4 kJ/mol b. From the calculated entropy change value, what can you conclude regarding the process? Answer: 2. In the reaction between hydrogen gas and chlorine gas to give hydrogen chloride gas spontaneous, under standard conditions? Predict the spontaneity based on the calculated values of enthalpy change, standard entropy, and AS*universe. Had + Clae 2HCl Standard entropy values, S' in J/mol-K: Ha - 130.7; Cla 223.0; HCl = 186.8 Standard enthalpy of formation, AHſ", for HCl - -92.3 kJ/mol

5. EXERCISES Activity 1: Solve Me! Direction: Solve the given problem below. Write your answer on a separate sheet of paper. 1. Calculate the entropy change AS'universe for the following reaction, at 25 C. CO + 2H2 CH,OH Standard entropy, AS CO- 197.7 J/mol-K Ha 130.7 J/mol-K CH,OH = 127.2 J/mol-K Standard enthalpy of formation, AH? CO -110.5 kJ/mol Had - 0 kJ/mol CH3OH = -238.4 kJ/mol b. From the calculated entropy change value, what can you conclude regarding the process? Answer: 2. In the reaction between hydrogen gas and chlorine gas to give hydrogen chloride gas spontaneous, under standard conditions? Predict the spontaneity based on the calculated values of enthalpy change, standard entropy, and AS*universe. Had + Clae 2HCl Standard entropy values, S' in J/mol-K: Ha - 130.7; Cla 223.0; HCl = 186.8 Standard enthalpy of formation, AHſ", for HCl - -92.3 kJ/mol

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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A Moving to another question will save this response. Question 11 A reaction has an equilibrium constant (K) of 58.2. If the entropy of this reaction is-36.7 J/mol"K at a temperature of 317 K, what is the enthalpy of this reaction in kJ/mol? Report your answer to one decimal place. If your answer is negative, make sure to input a negative sign (-). Moving to another question wvill save this response. lyp 144 &
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on Item 3 Review Constants Periodic Table Part C Complete previous part(s) Part D Calculate the standard-state entropy for the following reaction: 1 CHĄ(g) +2 O2(g) → 1 CO2(g) + 2 H2O(1) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. S° Formula J/(K-mol) CO2(g) 214 H2O(1) 189 CH4(g) 186 O2(g) 205 Express your answer with the appropriate units. • View Available Hint(s)
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