22 points For the reaction below, AH = -196 kJ and AS = -126 J/K at 25°C. 2H2O(l) + O2(g) + 2H2020) Calculate AG' for the reaction in kilojoules. 0 -348 kJ -37.7 kJ -193 kJ -234 kJ 0 -158 kJ Previous Next
AG°= AH-TAS AG=AGº+RTinQ where R=8.314 J/mol K 1. Calculate AGº for the following reaction at 25 °C if AH°= -1854 kJ/mol; AS°= -236 J/mol K CH-COCH3(g) + 402(g) → 3C02(g) + 3H2O(1) 2. NH.NO, dissolving in water is a spontaneous process. As it dissolves, the temperature of the solution decreases. Based on this, what must the signs (positive or negative) of AG, AH, and AS be?
1. Determine the change in the boiling point (ΔTB) and Bp for a solution containing 0.328 moles of naphthalene (a nonvolatile, non-electrolyte compound) in 250. g of liquid benzene (Bp° = 80.1°C)? (Kb = 2.53˚ C/m) 3.32 °C and 76.8 °C 3.32 °C and 83.4 °C 4.31 °C and 0 °C 7.41 °C and 72.7 °C 7.41 °C and 87.5 °C 2. Consider the following equilibrium reaction. P4S3(g) + 8O2(g) ⇌ P4O10(s) + 3SO2(g) ΔH = –3677 kJ If heat...
For the reaction 4HCl(g) + O2(g)—>2H2O(g) + 2C12(g) AH = -114.4 kJ and AS°=-128.9 J/K The equilibrium constant for this reaction at 278.0 K is Assume that AH and ASº are independent of temperature.
12. Using the data: CH«(9), AH; = +51.9 kJ mor', sº = 219.8 J mor' k' CO2(g), AH = -394.0 kJ mor', sº = 213.6 J mor' k' H2O(), AH = -286.0 kJ mor', sº = 69.96 J mor'' O2(g), AH = 0.00 kJ mor', sº = 205 J mor'' calculate the maximum amount of useful work that can be obtained, at 25.0 °C, from the process: C2H4(9) + 3 O2(g) → 2 CO2(g) + 2 H2O(1) a. 1332 kJ...
A particular reaction has AH° = 55 kJ and AS = 101 J/K, at 25°C. A) Calculate the temperature (in K) at which AG° = 0. B) What is the significance of (what does it mean when or what does it indicate when) AGⓇ = 0?
5. (opts total) a. For a certain reaction, AH = 142 kJ/mol and AS = - 30.5 J/mol K at 25°C. Calculate the value of AGº for this reaction. Ans: AGº = A different reaction has AH = -106 kJ/mol and AS°= 94.3 J/mol K at 250 Call Ans: AGº = c. Will the reaction in Sa be spontaneous? How can you tell? Will the reaction in 5b be spontaneous? How can you tell?
For the reaction 2H2O2(l)2H2O(l) + O2(g) H° = -196.0 kJ and S° = 125.7 J/K The equilibrium constant for this reaction at 305.0 K is . Assume that H° and S° are independent of temperature. AND The equilibrium constant, Kp, for the following reaction is 0.215 at 673 K. NH4I(s) NH3(g) + HI(g) If ΔH° for this reaction is 182 kJ, what is the value of Kp at 775 K? Kp =
A particular reaction has AHⓇ = 55 kJ and AS° = 101 J/K, at 25°C. A) Calculate the temperature (in K) at which AG° = 0. B) What is the significance of (what does it mean when or what does it indicate when) AGº = O?
For the reaction 2802(g) + O2(g)—>2503(g) AH° = -197.8 kJ and AS° = -187.9 J/K The equilibrium constant for this reaction at 298.0 K is Assume that AHⓇ and AS™ are independent of temperature.