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Limestone stalactites and stalagmites are formed in caves by the following reaction: Ca2+(aq)+2HCOâ3(aq)âCaCO3(s)+CO2(g)+H2O(l) If 1 mol of CaCO3 forms at 298 K under 1 atm pressure, the reaction performs 2.49 kJ of PâV work, pushing back the atmosphere as the gaseous CO2 forms. At the same time, 38.95 kJ of heat is absorbed from the environment.
1. What is the value of ÎH for this reaction? Express your answer using four significant figures.
2. What is the value of ÎE for this reaction? Express your answer using four significant figures.
Limestone stalactites and stalagmites are formed in caves by the following reaction: Ca2+(aq)+2HCOâ3(aq)âCaCO3(s)+CO2(g)+H2O(l) If 1 mol of CaCO3 forms at 298 K under 1 atm pressure, the reaction performs 2.49 kJ of PâV work, pushing back the atmosphere as the gaseous CO2 forms. At the same time, 38.95 kJ of heat is absorbed from the environment.
1. What is the value of ÎH for this reaction? Express your answer using four significant figures.
2. What is the value of ÎE for this reaction? Express your answer using four significant figures.
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Tod ThielLv2
2 Feb 2019
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