Problem 6 Part B Calculate the standard-state entropy for the following reaction

Question

Problem 6 Part B Calculate the standard-state entropy for the following reaction 1 Al3O3(s) Entropy, denoted by the symbol S, is the thermodynamic property describing the amount of molecular randomness or disorder in a system. It is a state thermodynamic function meaning that its value does not depend on the path used to arrive at a specific set of conditions. Each system with a specified temperature, pressure, and composition has a unique entropy value + 3H2(g) 2 Al(s) + 3H20(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table The entropy change, S, is the difference in entropy between two states of a system, such as between the reactants and products of a reaction or between a flask before Formula J/(K-mol) Al(s 28.0 H20189 and after adding a mixture of gas Al2O3(s51.0 131 H2(g) Express your answer with the appropriate units. alne Submit Hints My Answers Give Up Review Part Incorrect; Iry Again, 4 attempts remaining

Explanation / Answer

Srxn = Sproducts - Sreactants

Srxn = 2*28 + 3*189 - (51 + 3*131) = 179 J/moK

Srxn = 179 J/moK

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