Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ? 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table.
S? J/(K?mol)
Al(s) | 28.0 |
H2O(l) | 189 |
Al2O3(s) | 51.0 |
H2(g) | 131 |
Al2O3(s) + 3H2(g) -------> 2Al(s) + 3H2O(l)
now, standard entropy change for the above reaction = 2*standard eb=ntropy of Al + 3*standard entropy of H2O - 3*standard entropy of H2 - standard eb=ntropy of Al2O3
or, standard entropy change for the above reaction = 2*28 + 3*189 - 3*131 - 51 = 179 J/K-mol
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ? 2 Al(s) + 3 H2O(l) (If applicab...
Calculate the standard-state entropy for the following reaction: 1 Al2O3(s) + 3 H2(g) ⟶ 2 Al(s) + 3 H2O(l) (If applicable, coefficients of one have been included for clarity.) The standard entropy values are given in the table. Formula S∘ J/(K⋅mol) Al(s) 28.0 H2O(l) 189 Al2O3(s) 51.0 H2(g) 131
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. The entropy change, ΔS, is the difference in entropy between two states of a system, such as between the reactants and...
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