I need some help... Completed most of the questions but stuck on these??*
The enthalpy of formation of water as steam is likely to be which of the following if the enthalpy of formation of water under standard conditions is -286 kJ/mole
-220
-310
-242
-150**
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*2. The entropy change for the reaction Al + Fe2O3 --- Al2O3 + Fe is?if the S of Al = 28 J/mol.k; Fe2O3 = 90 J/mol.k; Al2O3 = 51 J/mol.k; Fe = 27 J/mol.k
*3. The entropy change for the reaction 2Al + 3H2O --- Al2O3 + 3H2 is if the S values of Al = 28; H2 O(g) = 190; Al2O3 = 51; H2 = 130
*4. The entropy change for the reaction H2S + Cu -- CuS + H2 is?if the values of H2S = 206; Cu = 33; CuS = 66; H2 =130
*5. The entropy change of the surroundings for reaction that has an enthalpy change of reaction of -100 kJ/mole at 300K is?
Any help would be greatly appreciated....