Question
Calculate the standard enthalpy change, Hrxn, in kJ for the following chemical equation, using only the thermochemical equations below: 4KOH(aq) + 3O 2 (g) 4KO
Calculate the standard enthalpy change, Hrxn, in kJ for the following chemical equation, using only the thermochemical equations below: 4KOH(aq) + 3O2(g) 4KO2(s) + 2H2O(l) Report your answer to three significant figures in scientific notation.
| Equations: | Hrxn (kJ) | |
| 4K(s) + O2(g) 2K2O(s) | -726.4 | |
| K(s) + O2(g) KO2(s) | -284.5 | |
| K2O(s) + H2O(l) 2KOH(aq) | -318 |
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General Chemistry
Authors: Darrell Ebbing, Steven D. Gammon
11th Edition
1305580346, 978-1305580343
