For the reaction below, which statement best describes what is happening with the sign of AGO? CaCO3+2 Na Cla a)-NazC O3(a q) + Ca Clza q) (exothermic) The reaction is spontaneous at low temperature and non-spontaneous at high temperature. The reaction is spontaneous at all temperatures. The reaction is non-spontaneous at low temperature and spontaneous at high temperature. The reaction is non-spontaneous at all temperatures.

For the reaction below, which statement best describes what is happening with the sign of AGO? CaCO3+2 Na Cla a)-NazC O3(a q) + Ca Clza q) (exothermic) The reaction is spontaneous at low temperature and non-spontaneous at high temperature. The reaction is spontaneous at all temperatures. The reaction is non-spontaneous at low temperature and spontaneous at high temperature. The reaction is non-spontaneous at all temperatures.

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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For a particular reaction, AH° = 67.7 kJ and AS° = 126.9 J/K. Assuming these values change very little with temperature, at what temperature does the reaction change from nonspontaneous to spontaneous? T = K Is the reaction in the forward direction spontaneous at temperatures greater than or less than the calculated temperature? less than greater than
17. For the reaction: A + B C AH°= +45 kJ/mol and AS° = +60 J/K.mol. At what temperature will this reaction be spontaneous? * O The reaction is nonspontaneous at all temperatures. O At a temperature greater than 477 °C. O The reaction is spontaneous at all temperatures. O At a temperature greater than 750 °C. O At a temperature lower than 477 °C.
For the reaction 2NO(g) + O2(g) → 2NO2(g), AH° = -113.1 kJ/mol and AS° = -145.3 J/K-mol. Under which temperature conditions would the reaction be spontaneous? Only at low temperatures Not possible to be spontaneous at all temperatures Only at high temperatures For all temperatures
Consider the following reaction
Chemistry Above what temperature does the following reaction become non-spontaneous? 2 H₂S(g) + 3 O₂(g) → 2 SO₂(g) + 2 H₂O(g) AH = -1036 kJ; AS = -153.2 J/K O 158.7 K This reaction is nonspontaneous at all temperatures. O 298 K This reaction is spontaneous at all temperatures O 6.762 × 103 K
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For each reaction, calculate ΔH°rxn, ΔS°rxn, and ΔG°rxn at 25 °C and state whether or not the reaction is spontaneous. If the reaction is not spontaneous, would a change in temperature make it spontaneous? If so, should the temperature be raised or lowered from 25 °C?a. 2 CH4( g)------->C2H6( g) + H2( g)b. 2 NH3( g)------> N2H4( g) + H2( g)c. N2( g) + O2( g)-------->2 NO( g)d. 2 KClO3(s)-------->2 KCl(s) + 3 O2( g)
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A reaction has AH°= 100 kJ/mol and AS°= 250 J/mol.K. Is the reaction spontaneous at room temperature? If not, under what temperature conditions will it become spontaneous?
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