Calculate the total entropy change when each of the following reactions are run at 25°C. Is...
At 25 °C, the following reaction is CH4(9) + 2O2(g) + CO2(g) + 2 H2O(1) Nonspontaneous due to unfavorable enthalpy Spontaneous with favorable enthalpy and entropy Spontaneous with favorable enthalpy change Spontaneous with favorable entropy change
1. Predict whether the entropy change for each of the following reactions will have negative value. Calculations are not necessary! (a) CS2 (g) + 3 02 (g) → CO2(g) +2 SO2 (g) (b) 2 CH4 (g) + 3 02 (g) → 2 CO (g) + 4H2O(g) (c) 2 NH4 (1) +2 NO2 (g) → 3 N2(g) + 4H2O(g) 2. Calculate the entropy change at 25°C for the following reaction: Ca (s) + 0.125 S, (s) + 2 02 (g) →...
3. Predict the sign (positive or negative) on the entropy change for each of these reactions. (a) 2 SO2 (g) + O2 (g) → 2 SO3 (g) Negative (b) 2 NH3 (g) → N2 (g) + 3 H2 (g) (c) CO (g) + 2 H2 (g) → CH3OH (1) 4. For the reaction: 2NO2 (g) + N204 (g) at 298 K, The value of AH° and AS™ are -58.03 kJ and -176.6J/K, respectively. (a) What is the value of AG°...
Practice Problem ATTEMPT Calculate the standard entropy change for the following reactions at 25°C. Predict first whether each one will be positive, negative, or too close to call. (a) 200,(8) 200(g) +0,18) (b) 30.08) 20,8) (c) 2NaHCO,(s) Na,CO(s) + H,000 + C0,18)
1. Predict whether the entropy change for each of the following reactions will have a positive value or a negative value. Calculations are not necessary! (a) CH4 (g) + H2O (g) → C2H5OH (g) (b) 2 NO2 (g) → 2 NO (g) + O2 (g) (c) A1203 (s) + 3 H2 (g) → 2 Al(s) + 3 H2O (1)
Calculate the standard entropy change for the following reaction at 25 "C. s" values can be found here. HCI(g) + NaOH (s) → Nacl(s) + H2o@ Number J/K
Calculate the standard entropy change for the following reaction at 25 °C. S° values can be found here. Calculate the standard entropy change for the following reaction at 25 °C. S values can be found here H,graphite) (H, +co Number J/K
The change in entropy, ASixn, is related to the the change in the number of moles of gas molecules, Angas. Determine the change in the moles of gas for each of the reactions and decide if the entropy increases, decreases, or has little or no change. A. C(s) + H2O(g) → CO(g) + H2(g) The entropy, ASixn Angas = Angos =D mol has little or no change. increases. decreases. B. CO(g) + 3H2(g) = CH(g) + H2(g) The entropy, ASixn...
Predict whether the entropy change for each of the following reactions will have a positive value or a negative value. Calculations are not necessary! (a) 2 CO (g) + 2 Cl2 (g) → 2 COCl2 (g) (b) 2 CO2 (g) → 2 CO (g) + O2 (g) (c) SiCl4 (g) + 2 H2O (g) → 4 HCl (g) + SiO2 (s, quartz)
question 17.57 entropy change for H2(g) + CuO(s) → H2O(0) + Cu(s) 17.56 Use the data in Appendix G to calculate the standard entropy change for 2Al(s) + Fe2O3(s) → Al2O3(s) + 2Fe(s) OBJECTIVE Define Gibbs free energy and relate the sign of a Gibbs free-energy change to the direction of spontane- ous reaction. 17.57 Calculate AGº for the following reactions and state whether each reaction is spontaneous under standard con- ditions at 298 K. (a) Fe2O3(s) + 2Al(s) →...