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
General Chemistry - Standalone book (MindTap Course List)
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
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Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.132QP
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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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