click on the delta lab changes sign when a process is reversed h2o(l) -> h2o(g),
ID: 1067859 • Letter: C
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click on the delta lab changes sign when a process is reversed h2o(l) -> h2o(g), deltaH = 44.0k previous 2 of 8 next Part B AH Changes sign when a Click on the leNOOesisreversed button within the activity and analyze the relationship between the two reactions that are displayed. The reaction that was on the saeen when you started and its derivative demonstrate that the reaction enthalpy, AH. changes sign when a process is reversed. Consider the reaction What will AH be for the reaction if it is reversed? Express your answer with appropriate units. Value Units Submit Hints My Answers Give up Review Part Hess's law of constant heat summation Hess's law states that if a reaction is canied out in a series of steps. AH for the overall reaction will equal the sum of the enthalpy changes for the individual steps. By using Hess's law, you can calculate the enthalpy of the reaction. For example, you can calculate the reaction enthalpy for the combustion of solid sulfur, S(s), to form SO, gas S(s) Oa (g) SO3 (g) 1:05 PM ockhartoc... MasteringChemistry:Explanation / Answer
H2O (l) ----------> H2O (g) , delta H = + 44 .0 kJ
The reverse reaction is,
H2O (g) ---------> H2O (l) , Delata H = - 44.0 kJ
Just change sign of H.
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