Question
Use four significant figures please.
For the decomposition of barium carbonate, consider the following thermodynamic data: Calculate the temperature in kelvins above which this reaction is spontaneous. Calculate the equilibrium constant for the following reaction at room temperature, 25 degree C: BaCOs(s) rightarrow BaO(s) + CO2(g) Express your answer numerically to three significant figures. Barium oxide, BaO, is manufactured by decomposition of barium carbonate, BaCO3. in a furnace: BaCO3(s) rightarrow BaO(s) + CO2(g) The heat produced by a furnace maintained at a temperature of 600 K can decompose barium carbonate to barium oxide. The spontaneity of a reaction can be determined from the free energy change for the reaction, Delta G degree degree.
Explanation / Answer
delta H - T x Delta S < 0
=> T > 243500 / 172
=> T > 1415.7 K
Part B
Delta G = 243500 - 298 x 172 = 192244 J
Delta G = -RT ln K
=> 192244 = - 8.314 x 298 x ln K
=> K = 2 x 10^-34
