For a given reaction, ΔrH = +35.5 kJ mol-1 and ΔrS = +83.6 J K-1 mol-1. The reaction is spontaneous ________. Assume that ΔrH and ΔrS do not vary with temperature.
| A. at all temperatures |
| B. at T < 298 K |
| C. at T < 425 K |
| D. at T > 425 K |
| E. at T > 298 K |
For a given reaction, ΔrH = +35.5 kJ mol-1 and ΔrS = +83.6 J K-1 mol-1....
For a given reaction, H = +35.5 kJ/mol and S = +83.6 J/Kmol. The reaction is spontaneous ________. Assume that H and S do not vary with temperature. at T < 425 K at T > 425 K at all temperatures at T > 298 K at T < 298 K
At what temperature will a reaction be spontaneous? AH- +222 kJ/mol and AS - +811 J/K-mol and assume both do not vary with temperature. at T> 298 K at all temperatures at T > 274 K at T<274K at T < 298 K
What is ΔrH for a reaction that has ΔrG = -26.3 kJ mol-1 and ΔrS = 44.9 J mol-1 K-1 at -9.0 °C? Express your answer in kJ mol-1.
What is ΔrG for a reaction that has ΔrH = 86.7 kJ mol-1 and ΔrS = 83.7 J mol-1 K-1 at 3.3 °C? Express your answer in kJ mol-1 .
What is ΔrH for a reaction that has ΔrG = -0.2 kJ mol-1 and ΔrS = 65.4 J mol-1 K-1 at 48.2 °C? Express your answer in kJ mol-1 .
For the decomposition of barium carbonate, consider the following thermodynamic data: ΔrH∘ΔrH∘ 271.5kJ mol−1 ΔrS∘ΔrS∘ 173.8J K−1 mol−1 A: Calculate the temperature in kelvins above which this reaction is spontaneous. Answer:1562K B: Calculate the equilibrium constant for the following reaction at room temperature, 25 ∘C: BaCO3(s)→BaO(s)+CO2(g) Answer: 2.73*10^-39 C: When adjusted for any changes in ΔrH and ΔrS with temperature, ΔrG∘(600K)=167kJ mol−1. Calculate the equilibrium constant at 600 K .
At what temperature will a reaction be spontaneous? AH = +22.2 kJ/mol and AS = +81.1 J/K-mol and assume both do not vary with temperature. at T > 298 K at all temperatures at T < 298 K at T < 274 K at T> 274 K
What is ΔrS for a reaction that has ΔrH = -85.6 kJ mol-1 and ΔrG = 93.9 KJ mol-1 at 16.2 °C?
Given the values of ΔrH∘, ΔrS∘, and T below, determine ΔSuniv. Part A: ΔrH∘= 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 291 K . Part B ΔrH∘=− 130 kJmol−1 , ΔrS∘= 263 JK−1mol−1 , T= 291 K . Part C ΔrH∘=− 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 291 K . Part D ΔrH∘=− 130 kJmol−1 , ΔrS∘=− 263 JK−1mol−1 , T= 561 K .
1. A reaction has AH = 100 kJ/mol and AS = 250 J/mol K. a. Is the reaction spontaneous at room temperature? b. If not, under what temperature conditions will it become spontaneous? 2. Consider the following reaction at 298 K: N204(g) = 2NO2(g) KP=0.142 What is the standard free energy change at this temperature? Is the reaction spontaneous at this temperature?