1a) For which of the following reactions is ΔSo > 0?
a. |
2 C2H6(g) + 7 O2(g) à 4 CO2(g) + 6 H2O(g) |
|
b. |
H2CO(g) + O2(g) à CO2(g) + H2O(l) |
|
c. |
N2(g) + 3 H2(g) à 2 NH3(g) |
|
d. |
NH3(g) + HI(g) à NH4I(s) |
1b) For a particular chemical reaction ΔH = 7.0 kJ and ΔS = –17 J/K. Under what temperature condition is the reaction spontaneous?
a) When T > 412 K.
b) The reaction is not spontaneous at any temperature.
c) The reaction is spontaneous at all temperatures.
d) When T < –412 K.
We need at least 10 more requests to produce the answer.
0 / 10 have requested this problem solution
The more requests, the faster the answer.
1a) For which of the following reactions is ΔSo > 0? a. 2 C2H6(g) + 7...
1. Estimate the enthalpy (kJ) from bond energies CCl4(g) + O2(g) → CO2(g) + 2Cl2(g) 2. Estimate the enthalpy (kJ) from bond energies H2(g) + CO2(g) → H2O(g) + CO(g) 3. Consider the condensation reaction of CCl4. Indicate ΔSo > 0, ΔSo ~ 0, or ΔSo < 0 4. Consider the following reaction: CaCO3(s) → CaO(s) + CO2(g), Indicate if ΔSo is >0, <0, or ~0 5. Consider the condensation reaction of CCl4 and select the accurate statement, (consider signs...
Please answer both questions. Thank you For which of the following reactions is ASO > 0? a. 2 C2H6(g) +702(g) → 4 CO2(g) + 6 H2O(g) b. H2CO(g) + O2(g) → CO2(g) + H20(1) C. N2(g) + 3 H2(g) → 2 NH3(g) d. NH3(g) + HI(g) → NH41(s) QUESTION 5 For which of the following reactions is AS° at 25 °C closest to zero? a. N2(g) + O2(g) → 2 NO(g) b. H2(g) + 12(s) → 2 HI(g) c. CH3CHO(g)...
1a. ) Complete the table with signs and general values for K (ie: K<1 or K>1) Always spontaneous Always nonspontaneous Spontaneous at high temperatures ΔG ΔH ΔS K 2. Calculate the boiling point (in K) for the following: X2 (l) --) X2 (g) ΔH = +35 kJ ΔS = + 215 J/K (HINT: what does ΔG equal when a reaction switches from spontaneous to nonspontaneous?) 1b. ) Trick question (refer to the table in #1): at what temperature does the...
3) Answer all parts of the following question. a. The reaction: Al(s) + Fe2O3(s) → Fe(s) + Al2O3(s) has ΔH = -847.6 kJ and ΔS = -41.3 J/K at 25°C. Calculate ΔG and determine if it is spontaneous. b. Above what temperature does the following reaction become nonspontaneous? FeO(s) + CO(g) → CO2(g) + Fe(s) ΔH = -11.0 kJ; ΔS = -17.4 J/K c. Find ΔSsurr and predict whether or not this reaction will be spontaneous at 398 K. NH3(g)...
The combustion reaction of ethane is as follows. C2H6(g) + 7/2 O2(g) → 2 CO2(g) + 3 H2O(l) Using Hess's law and the reaction enthalpies given below, find the change in enthalpy for this reaction. reaction (1): C(s) + O2(g) → CO2(g) ΔH = −393.5 kJ/mol reaction (2): H2(g) + 1/2 O2(g) → H2O(l) ΔH = −285.8 kJ/mol reaction (3): 2 C(s) + 3 H2(g) → C2H6(g) ΔH = −84.0 kJ/mol
The gas ethane, C2H6(g), can be used in welding. When ethane is burned in oxygen, the reaction is: 2 C2H6(g) + 7 O2(g)4 CO2(g) + 6 H2O(g) (a) Using the following data, calculate ΔH° for this reaction. ΔH°f kJ mol-1: C2H6(g) = -84.0 ; CO2(g) = -393.5 ; H2O(g) = -241.8 ΔH° = kJ (b) Calculate the total heat capacity of 4 mol of CO2(g) and 6 mol of H2O(g), using CCO2(g) = 37.1 J K-1 mol-1 and CH2O(g) =...
Consider the following reaction: 2NO(g)+O2(g)→2NO2(g)2NO(g)+O2(g)→2NO2(g) Estimate ΔG∘for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous. (Assume that ΔH∘ΔH∘ and ΔS∘ΔS∘ do not change too much within the give temperature range.) 1) 713 2) 852
Consider the following reaction: 2NO(g)+O2(g)→2NO2(g) Estimate ΔG∘ for this reaction at each of the following temperatures and predict whether or not the reaction will be spontaneous. (Assume that ΔH∘ and ΔS∘ do not change too much within the give temperature range.) ANSWER MUST BE IN kJ!! a) 722 K b) 860 K
A process at constant T and P can be described as spontaneous if ΔG < 0 and nonspontaneous if ΔG > 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm. (Hint: Use the data below to calculate ΔH and ΔS [assumed independent of temperature and equal to ΔH° and ΔS°, respectively] and then use the definition of ΔG.) 3 PbO2(s) → Pb3O4(s) + O2(g) ΔHf° (kJ mol-1) -277.0...
Ethane burns in air to give H2O and CO2 2 C2H6(g) + 7 O2(g) + 4CO2(g) + 6 H2O(g) a. What volume of O2 (L) is required for complete reaction with 4.3 L of C2H6? Assume all gases are measured at the same temperature and pressure. Volume = b. What volume of H2O vapor (L) is produced in the complete reaction of 4.3 L of C2H6? Assume all gases are measured at the same temperature and pressure. Volume = Submit...