K = 0.12 K. = 0.3 K, = 4567890 2R dems only t Write out an expression for the pr
ID: 939072 • Letter: K
Question
K = 0.12 K. = 0.3 K, = 4567890 2R dems only t Write out an expression for the pressure of the desired product R2D2 in terms only of the equilibrium constants and PR P Given the following reaction enthalpies, would the production of R2D2 from R and D be more efficient in a hot climate (e.g., the Tatooine desert)or a cold climate (e.g., the icy planet Hoth where tauntauns roam) assuming the same pressure in each climate? a. b. DoD, =-327 R2+D2 toR.D2 Given the information above and the fact that R and D are each present with equilibrium pressures of 0.1 atm, what is the entropy change required to make one mole of R2D2 from pure R and D at a temperature of 298 K? c.Explanation / Answer
a) since the equilibrium 1 + equilibrium 2 gives us the final product,
Keq= K1*K3 + K2*K3
if Pr is the equilibrium pressure of R and Pd that of D,
then Pr2d2/(Pr^2 * Pd^2) = K1*K3 + K2*K3
or Pr2d2 = (K1*K3 + K2*K3)*(Pr^2 * Pd^2)
b) dH final = -1138 -327 + 1141
= -324 kJ/mol
hence the reaction is exothermic. hence the cold climate will favour the reaction
c)Pr2d2 = 0.1^2*0.1^2*(0.12*4567890 + 0.3*4567890)
=191.851 atm
now entropy change = dH/T
=-324/298
=1.087
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