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1. Consider the following reaction (4 pts) C(s) + H2O(g) → CO(g) +...
For the reaction: C(s) + H2O(g) CO(g) + H2(g), ΔH° = 131 kJ and ΔS°...
For the reaction: C(s) + H2O(g) CO(g) + H2(g), ΔH° = 131 kJ and ΔS° = 128 J/K at 298 K. At temperatures greater than ______ K, this reaction is spontaneous under standard conditions. a. 1.02 K b. 273 K c. 1023 K d. 753 K
Using the following data determine the temperature (in K) at which the reaction H2O(g)+ C(s,graphite) ↔...
Using the following data determine the temperature (in K) at which the reaction H2O(g)+ C(s,graphite) ↔ H2(g) + CO(g) this becomes spontaneous. ΔfH° (H2O(g)) = -251.2 kJ mol-1 ΔfH° (C(s,graphite)) = 0.0 kJ mol-1 ΔfH° (H2(g)) = 0.0 kJ mol-1 ΔfH° (CO(g)) = -110.1 kJ mol-1 S° (H2O(g)) = 192.6 J K-1 mol-1 S° (C(s,graphite)) = 6.4 J K-1 mol-1 S° (H2(g)) = 136.9 J K-1 mol-1 S° (CO(g)) = 192.4 J K-1 mol-1
2. For the following example, identify the following. H2O(l) → H2O(s) question 2 options a negative...
2. For the following example, identify the following.
H2O(l) → H2O(s)
question 2 options
a negative ΔH and a negative ΔS
a positive ΔH and a negative ΔS
a negative ΔH and a positive ΔS
a positive ΔH and a positive ΔS
It is not possible to determine without more information.
3. Calculate ΔS°rxn for the following reaction. The S° for each
species is shown below the reaction.
C2H2(g) + H2(g) →
C2H4(g)
S°(J/mol∙K) 200.9 130.7 219.3
Question 4 options:...
4. Consider the reaction 3 C (graphite)2 H2O (g) CH4 (g) 2 CO (g) The following...
4. Consider the reaction 3 C (graphite)2 H2O (g) CH4 (g) 2 CO (g) The following data are needed (all are at 298 K): S(J mol K) AH(kJ mol AAG(kJ mol) compound C, graphite 0 5.740 Н.О (g) - 241.82 188.83 - 228.57 CH4 (g) 186.26 -74.81 - 50.72 СО (g) 197.67 - 137.17 - 110.53 a) Determine A,G° and K for this reaction at 298 K and comment on the spontaneity of this process b) If you find that...
Consider the reaction CO2(g) + H2(g)CO(g) + H2O(g) where S° rxn = 42.1 J/K Using standard...
Consider the reaction CO2(g) + H2(g)CO(g) + H2O(g) where S° rxn = 42.1 J/K Using standard thermodynamic data (in the Chemistry References), calculate the entropy change of the surroundings and the universe at 25°C. Ssurroundings = _____J K-1 mol-1 Suniverse = _____J K-1 mol-1
Use the given data at 700 K to calculate ΔG°for the reaction H2(g) + CO2(g) →...
Use the given data at 700 K to calculate ΔG°for the reaction H2(g) + CO2(g) → H2O(g) + CO(g) Substance H2(g) CO2(g) H2O(g) CO(g) ΔH°f(kJ/mol) 0 -393 -242 -111 S°(J/K·mol) 131 214 189 198 -472 kJ 10.6 kJ -775 kJ -2.94 x 104 kJ
Consider the combustion reaction for calcium: 2 Ca(s) + O2(g) ⇾ 2 CaO(s) ΔH = -1270...
Consider the combustion reaction for calcium: 2 Ca(s) + O2(g) ⇾ 2 CaO(s) ΔH = -1270 kJ, ΔS = -365 J/K a) Calculate ΔG at 25°C and determine whether the reaction is spontaneous. b) Determine at what temperature (if any) the reaction is spontaneous. Please show all work and steps, thank you!
The following reaction was carried out in a 3.75 L reaction vessel at 1100 K: C(s)+H2O(g)⇌CO(g)+H2(g)...
The following reaction was carried out in a 3.75 L reaction vessel at 1100 K: C(s)+H2O(g)⇌CO(g)+H2(g) If during the course of the reaction, the vessel is found to contain 8.50 mol of C, 12.7 mol of H2O, 4.00 mol of CO, and 6.20 mol of H2, what is the reaction quotient Q? Enter the reaction quotient numerically. Q = Consider the reaction CO(g)+NH3(g)⇌HCONH2(g), Kc=0.810 If a reaction vessel initially contains only CO and NH3 at concentrations of 1.00 M and 2.00...
15. Consider the following two reactions, with thermodynamic data at 298.15 K (1) Pb(s) + CO(g)...
15. Consider the following two reactions, with thermodynamic data at 298.15 K (1) Pb(s) + CO(g) → Pb0(s) + C(graphite) (2) 2 C(graphite) + O2(g) → 2 CO(g) Ar =-107 kl mori ΔG. =-51 kl mor Which of the following statements is(are) FALSE? (Assume AHt and AS" are independent of temperature.) G,-[PbO(s)) +188 kJ mol-1 Both reactions are spontaneous under standard conditions at room temperature. AS"for reaction 2 is-178 J K-1 mori at 298.15 K. Reaction 2 is spontaneous at...
3) Answer all parts of the following question. a. The reaction: Al(s) + Fe2O3(s) → Fe(s)...
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)...
2. For the following example, identify the following.
H2O(l) → H2O(s)
question 2 options
a negative ΔH and a negative ΔS
a positive ΔH and a negative ΔS
a negative ΔH and a positive ΔS
a positive ΔH and a positive ΔS
It is not possible to determine without more information.
3. Calculate ΔS°rxn for the following reaction. The S° for each
species is shown below the reaction.
C2H2(g) + H2(g) →
C2H4(g)
S°(J/mol∙K) 200.9 130.7 219.3
Question 4 options:...
4. Consider the reaction 3 C (graphite)2 H2O (g) CH4 (g) 2 CO (g) The following data are needed (all are at 298 K): S(J mol K) AH(kJ mol AAG(kJ mol) compound C, graphite 0 5.740 Н.О (g) - 241.82 188.83 - 228.57 CH4 (g) 186.26 -74.81 - 50.72 СО (g) 197.67 - 137.17 - 110.53 a) Determine A,G° and K for this reaction at 298 K and comment on the spontaneity of this process b) If you find that...
15. Consider the following two reactions, with thermodynamic data at 298.15 K (1) Pb(s) + CO(g) → Pb0(s) + C(graphite) (2) 2 C(graphite) + O2(g) → 2 CO(g) Ar =-107 kl mori ΔG. =-51 kl mor Which of the following statements is(are) FALSE? (Assume AHt and AS" are independent of temperature.) G,-[PbO(s)) +188 kJ mol-1 Both reactions are spontaneous under standard conditions at room temperature. AS"for reaction 2 is-178 J K-1 mori at 298.15 K. Reaction 2 is spontaneous at...
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