(3 points) In each pair, circle the molecule or atom with the expected higher entropy. 5. b. K(s) Na(s) a. SO2(g) SO3(g...
For each pair of substances, circle the one with the higher standard molar entropy (S°) at 25 °C. Explain a. I(s) or I(g) Reason:________________________________________________________ b. C(s, diamond) or C(s, graphite) Reason:_______________________________________
For each pair of substances, choose the one that you expect to have the higher standard molar entropy (s ) at 25 degrees celsius 1) NaNO3(s) or Na NO3 (aq) 2) CH4(g) or CH3CH3(g) 3) Br2(l) or Br2(g) 4) Br2(g) or F2(g) 5) PCl3(g) or PCl5(g) 6) CH3CH2CH2CH3(g) or SO2(g)
Which element is most metallic? a. Sn b. S c. Si d. F Circle the largest atom in each pair. a. C or O b. Rb or Na c. C or Al d. For Se
Which reaction or process has the greatest positive change in entropy, AS? A. 2 SO2(g) + O2(g) - 2 SO3(g) B. 2 KCIO3(s) - 2 KCl(s) + 3 O2(g) C. 2 Mg(s) + O2(E) – 2 Mgo(s) OD.2 C2H2(g) +5 O2(g) – 4 CO2(g) + 2 H20(1) E. Ag+(aq) + Cit(aq) – AgCl(s)
1).From the following enthalpy changes, S (s) +3/2 O2 (g) 2 SO2 (g) SO3 (g) O2 (g)2 SO3 (g) AH =-395.2 kJ AHo 198.2 kJ Calculate the value of AHo for the reaction by using Hess's law of Heat Summation S(s) O2 (g) SO2 (g) 2) Oxyacetylene torches are fueled by the combustion of acetylene, C2H2. 4 CO2 (g) +2 H20 (g) 2 C2H2 + 5 O2 (g) If the enthalpy change for the reaction is -2511.14 kJ/mol, a) How...
Consider the following reaction at 25 °C: 5 SO3(g) + 2 NH3(g) → 2 NO(g) + 5 SO2(g) + 3 H2O(g) If AH° = 42.4 kJ./mol and AS° = 562.3 J/ mol•K, estimate the temperature at which this reaction would be at equilibrium assuming that enthalpy and entropy are independent of temperature.
Which of the following reactions would be expected to have a positive entropy change. 4,5> 0? 1.2 SO2(g) + O2(g) → 2 SO3(g) 2. Ba(OH)2(5) - Bao(s) - H2O(g) 3. CO(g) - 2 H2(g) → CH3OH() Select one: a. 1 and 2 b. 1 and 3 c. 1 only d. 3 only e. 2 only ajo
1. (2 points) In each pair, choose the one with the most entropy. 1 mol of O3 (at STP) or 1 mol of SO3 (at STP) a. 1 mol of He at 100 K or 1 mol of He at 0 K b. c. Glucose (C&H12O6) or sucrose (C12H22O11) 1 mol of N2 gas at 0.01 atm or 1 mol of N2 gas at 1.0 atm d.
11. For each pair of substances determine which has the higher entropy per mole of substance. a. H2O (s) at 200 K or H2O(s) at 298 K. b. H2(g) at 298 K, 2.0 atm or H2(g) at 298 K, 1.0 atm. c. H2(g) at 298 K, 5.0 L or H2(g) at 298 K, 1.0 L. d. H2(g) at 500 K, 1.0 atm or H2(g) at 298 K, 1.0 atm. e. H2O(l) at 298 K or H2O(g) at 298 K. f....
5. 2.00 mol each of SO2 and NO2 are introduced into a 1.00 L reactor at 300°C where Kp = 3.4. SO2(g) + NO2(g) <=> SO3(g) + NO(g) a) Give the general expression for K, for this system in terms of the concentrations ci b) Give the general expression for Kp for this system in terms of the partial pressures Pi. c) Assuming that the gases all behave ideally what is the relationship between K, and Kp? d) What is...