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1. Calculate the entropy change, change entropy for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively. A. Thermal decomposition of NaNO3 2 NaNO3——>NaNO2(s)+O2(g) Change entropy values at 25 degree celcius NaNO3(s) = 116.5J/mol-K NaNO2(s) = 103.8J/mol-K O2(g) = 205 J/mol-K B. Synthesis of ammonia from nitrogen gas and hydrogen gas N2 (g) + 3H2(g) ——>2NH3(g) Change entropy values at 25 degree celcius N2(g) =191.6 J/mol-K H2 (g) = 130.7 J/mol-K NH3(g) = 192.8J/mol-K

1. Calculate the entropy change, change entropy for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively. A. Thermal decomposition of NaNO3 2 NaNO3——>NaNO2(s)+O2(g) Change entropy values at 25 degree celcius NaNO3(s) = 116.5J/mol-K NaNO2(s) = 103.8J/mol-K O2(g) = 205 J/mol-K B. Synthesis of ammonia from nitrogen gas and hydrogen gas N2 (g) + 3H2(g) ——>2NH3(g) Change entropy values at 25 degree celcius N2(g) =191.6 J/mol-K H2 (g) = 130.7 J/mol-K NH3(g) = 192.8J/mol-K

Chemistry
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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1. Calculate the entropy change, change entropy for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively.

A. Thermal decomposition of NaNO3

2 NaNO3——>NaNO2(s)+O2(g)

Change entropy values at 25 degree celcius

NaNO3(s) = 116.5J/mol-K

NaNO2(s) = 103.8J/mol-K

O2(g) = 205 J/mol-K

B. Synthesis of ammonia from nitrogen gas and hydrogen gas

N2 (g) + 3H2(g) ——>2NH3(g)

Change entropy values at 25 degree celcius

N2(g) =191.6 J/mol-K

H2 (g) = 130.7 J/mol-K

NH3(g) = 192.8J/mol-K

Activity NO.2 Instructions: Analyze and solve the problem carefully. Write your answer and solution on the worksheet provided. 1. Calculate the entropy change, AS for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively. a. thermal decomposition of! NaNO, 2 NANO (s)- NANO (s) + 0:(g) So values at 25 C NANO (s) = 116.5/mol-K NANO (s) = 103.8/mol-K 02(g) = 205 1/mol-K b. synthesis of ammonia trom nitrogen gas and hydrogen gas N + 3H,(g) -2NH,(g) So values at 25 C N(g) = 191.6 J/mol-K H(8= 130.7 J/mol-K NH3(g) = 192.8 J/mol-K 2. Calculate the entropy change, ASuverse for the following reaction, at 25°C CO(g) + 2H2(g) CH,OH(I) %3D Standard entropy, S: CO(g) = 197.7 J/mol-K H(g) = 130.7 J/mol-K CH,OH(I) = 127.2 J/mol-K Standard enthalpy of formation, AH: Co(g) = -110.5 kJ/mol H2(g) = 0 CH,OH(I) = -238.4 kJ/mol
Transcribed Image Text:Activity NO.2 Instructions: Analyze and solve the problem carefully. Write your answer and solution on the worksheet provided. 1. Calculate the entropy change, AS for the following reactions using tabulated standard entropy values and figure out if the resulting values obtained are consistent with the expected entropy change as predicted qualitatively. a. thermal decomposition of! NaNO, 2 NANO (s)- NANO (s) + 0:(g) So values at 25 C NANO (s) = 116.5/mol-K NANO (s) = 103.8/mol-K 02(g) = 205 1/mol-K b. synthesis of ammonia trom nitrogen gas and hydrogen gas N + 3H,(g) -2NH,(g) So values at 25 C N(g) = 191.6 J/mol-K H(8= 130.7 J/mol-K NH3(g) = 192.8 J/mol-K 2. Calculate the entropy change, ASuverse for the following reaction, at 25°C CO(g) + 2H2(g) CH,OH(I) %3D Standard entropy, S: CO(g) = 197.7 J/mol-K H(g) = 130.7 J/mol-K CH,OH(I) = 127.2 J/mol-K Standard enthalpy of formation, AH: Co(g) = -110.5 kJ/mol H2(g) = 0 CH,OH(I) = -238.4 kJ/mol
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