P. w seakins, m. j. pilling, l. t. niiranen, d. gutman, and l. n.krasnoperov (j. phys. chem. 96, 9847(1992)) measured the forward and reverse rate constants forthe gas-phase reactionc2h5 (g) + hbr (g) c2h6 (g)+ br (g)and used their findings to compute thermodynamic parametersfor c2h5. the reaction isbimolecular in both directions with arrhenius parameters a =1.0 109 dm3 mol-1 s-1,ea= -4.2 kj/mol for the foward reaction and k'=1.4 1011 dm3 mol-1 s-1,ea= 53.3 kj/mol for the reverse reaction. compute ∆fh7,s7m, and ∆fg7of c2h5at 298 k