Question

AND FREE ENERGY pr entropy For each Chemical reaction listed in the first column of the table below, predict the sign (positive or negative) of the reaction entropy ASar Ifit's not pesaitle to decide with the information given, check the "not enough information" button in the last column. Note for advanced students: Assume the temperature remains constant. Assume all gases and solutions are sign of reaction entropy O not enough informa O not enough information. Explanation O Type here to search

Answer 1

For the reaction 2SO₃(g) ---> 2SO₂(g) + O₂(g)

                       2 moles          2 + 1 = 3 moles

The number of moles of products are more than that of reactants so entropy increases there by $\Delta$S _rxn > 0

For the reaction N₃(g) +3H₂(g) ---> 2NH₃(g)

                       1+3=4 moles          2 moles

The number of moles of products are less than that of reactants so entropy decreases there by $\Delta$S _rxn < 0

For the reaction NaCl(s) ---> Na⁺(aq) + Cl^-(aq)          

The products which are in aqueous state and the reactant is in solid state so entropy increases there by $\Delta$S _rxn > 0