9. 2) Would you expect the entropy of CH,OHm to be greater than, less than, or equal to the entropy of C2H,OH? Explain your reasoning. 3) Would you expect the entropy of 1.0 M C1zHz01() to be greater than, less than or equal to the entropy of 10.0 M C12H2011(a9)? Explain your reasoning.

Place the following in order of  increasing molar entropy at 298 K. CO  ,   C 5H 12 ,    H 2

When fumes of ammonia and fumes of hydrobromic acid meet, they form a “smoke” of solid ammonium bromide according to the following reaction:                         NH3 (g) + HBr (g) --> NH4Br (s) (a)  Without doing any calculations, do you expect this reaction to occur with an increase or a decrease in entropy?  Explain your answer. (b) Determine ∆Hº, ∆Sº, and ∆Gº for this reaction.  Is the reaction spontaneous?  Is it exothermic?  Is there an increase or decrease in entropy? (c) Is there a temperature at which ammonium bromide will spontaneously decompose into ammonia gas and HBr gas?  If yes, what is/are this/these temperature(s)?  If no, why not?

Consider the reaction: 2H₂(g) + O₂(g) → 2H₂O(g) Using standard thermodynamic data at 298 K, calculate the free energy change when 2.08 moles of H₂ (g) react at standard conditions. Substance AG (kJ/mol) H₂O(g) -228.6 H₂(g) 0.0 O₂(g) 0.0 AGO =-475.488 rxn kJ