At 25 °C the reaction from Part A has a composition as shown in the table below. Pressure (atm) Π ΑΣΦ What is the free energy change, AG, in kilojoules for the reaction under these conditions? Express your answer numerically in kilojoules. View Available Hint(s) AG = 23.179 Substance Submit Previous Answers C₂H₂(g) 5.45 H₂(g) 5.15 C₂H6 (g) 1.25x10-² [X] X Incorrect; Try Again; 5 attempts remaining ? kJ

For the reaction NO(g)+NO2(g)N2O3(g) , use tabulated thermodynamic data to calculate H and S. Then use those values to answer the following questions. (a) Is this reaction spontaneous at 25°C? Explain your answer. (b) If the reaction is not spontaneous at 25°C, will it become spontaneous at higher temperatures or lower temperatures? (c) To show that your prediction is accurate, choose a temperature that corresponds to your prediction in part (b) and calculate G . (Assume that both enthalpy and entropy are independent of temperature.)

Determine whether each of the following statements is true or false. (a) An exothermic reaction is spontaneous. (b) When G° is positive, the reaction cannot occur under any conditions. (c) S° is positive for a reaction in which there is an increase in the number of moles. d) If H° and S° are both negative, G° will be negative.

Define the following: a. spontaneous process b. entropy c. positional probability d. system e. surroundings f. universe