Thermite" reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is 3 Zn(s) + Fe₂O3(s) → 3 Zno(s) + 2 Fe(s). During the reaction, he surroundings absorb 227.3 kJ/mol of heat. Is the reaction spontaneous at room temperature (298.15 K) under standard conditions? (See the Standard State Thermodynamic Data table. All values f AS in J/K/mol.) XJ/K/mol. From this, we compute AS univ =40 0.734 irst, we compute ASS =40 -0.763 sys conditions. XJ/K/mol. Therefore, the reaction is spontaneous under the given
Thermite" reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is 3 Zn(s) + Fe₂O3(s) → 3 Zno(s) + 2 Fe(s). During the reaction, he surroundings absorb 227.3 kJ/mol of heat. Is the reaction spontaneous at room temperature (298.15 K) under standard conditions? (See the Standard State Thermodynamic Data table. All values f AS in J/K/mol.) XJ/K/mol. From this, we compute AS univ =40 0.734 irst, we compute ASS =40 -0.763 sys conditions. XJ/K/mol. Therefore, the reaction is spontaneous under the given
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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Transcribed Image Text:"Thermite" reactions have been used for welding metal parts such as railway rails and in metal refining. One such thermite reaction is 3 Zn(s) + Fe₂O³(s) → 3 ZnO(s) + 2 Fe(s). During the reaction,
the surroundings absorb 227.3 kJ/mol of heat. Is the reaction spontaneous at room temperature (298.15 K) under standard conditions? (See the Standard State Thermodynamic Data table. All values
of AS in J/K/mol.)
First, we compute AS
conditions.
t
sys
4.0
-0.763
XJ/K/mol. From this, we compute AS
= 4.0
univ
0.734
XJ/K/mol. Therefore, the reaction is
spontaneous under the given
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