a Calculate AH for the reaction 2K (:) + 2H,0(0) — 2КОН(ад) + H (9) Substance and State AHţ' (kJ/mol) K(s) KOH(aqg) H2 (9) H2O(1) -481 -286 AH° = -390 A 5.20-g chunk of potassium is dropped into 1.00 kg water at 24.2°C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to raise the temperature of the water. (Never run this reaction. It is very dangerous; it bursts into flame!) Temperature = °C
a Calculate AH for the reaction 2K (:) + 2H,0(0) — 2КОН(ад) + H (9) Substance and State AHţ' (kJ/mol) K(s) KOH(aqg) H2 (9) H2O(1) -481 -286 AH° = -390 A 5.20-g chunk of potassium is dropped into 1.00 kg water at 24.2°C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to raise the temperature of the water. (Never run this reaction. It is very dangerous; it bursts into flame!) Temperature = °C
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter17: Chemcial Thermodynamics
Section: Chapter Questions
Problem 17.94QE: Suppose you have an endothermic reaction with H = + 15 kJ and a S of 150 J/K. Calculate G and Keq at...
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Transcribed Image Text:a Calculate AH° for the reaction
2K(s) + 2H,O(1) -
- 2KOH(aq) + Hz2 (9)
Substance and State AH° (kJ/mol)
K(s)
KOH(aq)
H2 (9)
H2O(1)
-481
-286
AH° = -390
kJ
bA 5.20-g chunk of potassium is dropped into 1.00 kg water at 24.2°C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to
raise the temperature of the water. (Never run this reaction. It is very dangerous; it bursts into flame!)
Temperature =
°C
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