posted by MONICA .
14. Calculate ƒ´S0 for the formation of 1 mol of HI(g) from its elements given the following information:
S0[H2(g)] = 131 J/mol∙K
S0[I2(s)] = 116 J/mol∙K
S0[HI(g)] = 206 J/mol∙K.
A) 82 J/K B) 165 J/K C) 247 J/K D) 329 J/K
dSrxn = (n*dSproducts) - (n*dSreactants).
That gives dSrxn for two mols; you want just one mole so divide that by 2.