(a)
Interpretation:
Whether the given reaction is capable of being harnessed to do the useful work at
Concept Introduction:
The Gibbs free energy of a system is defined as the Gibbs free energy of product minus Gibbs free energy of reactants. The Gibbs free energy of the system is a state function as it is defined in terms of
(b)
Interpretation:
Whether the given reaction is capable of being harnessed to do the useful work at
Concept Introduction:
Refer to part (a).
(c)
Interpretation:
Whether the given reaction is capable of being harnessed to do the useful work at
Concept Introduction:
Refer to part (a).
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Chemistry: The Molecular Science
- 2. In which of the following reactions is there a significant transfer of energy as work from the system to the surroundings? This occurs if there is a change in the number of moles of gases. C(s) + O2(g) → CO2(g) CH4(g) + 2 O2(g) → CO2g) + 2 H2O(g) 2 C(s) + O2(g) → 2 CO(g) 2 Mg(s) + O2(g) → 2 MgO(s)arrow_forwardThe formation of aluminum oxide from its elements is highly exothermic. If 2.70 g Al metal is burned in pure O2 to give A12O3, calculate how much thermal energy is evolved in the process (at constant pressure).arrow_forwardExplain inyour own words why work done by the system is defined as the negative of pV, not positive pV.arrow_forward
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- For the reaction BaCO3(s) BaO(s) + CO2(g), rG = +219.7 kJ/mol-rxn. Using this value and other data available in Appendix L, calculate the value of fG for BaCO3(s).arrow_forwardA pot of cold water is heated on a stove, and when the water boils, a fresh egg is placed in the water to cook. Describe the events that are occurring in terms of the zeroth law of thermodynamics.arrow_forwardCalculatethe work performed by a person whoexertsa force of 30 NN = newtonstomove abox 30metersif the force were a exactly parallel to the directionofmovement, and b45to thedirection of movement. Do the relative magnitudesmakesense?arrow_forward
- A bottle of soda has a head space containing 25.0 mL of CO2 gas at 4.2 atm pressure when the soda is at 4.4C. The bottle is opened slowly, letting the excess pressure escape. Howmuch work does the escaping CO2 do if the ambient pressure is 1.0 atm? Assume that the temperature remains constant.arrow_forwardWhat is the sign of the work when a refrigerator compresses a gas (the system) to a liquid during the refrigeration cycle?arrow_forwardWould the amount of heat absorbed by the dissolution in Example 5.6 appear greater, lesser, or remain the same if the heat capacity of the calorimeter were taken into account? Explain your answer.arrow_forward
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