3. When will the ∆Gº be negative for a reaction with a +∆Hº and a +∆Sº ?
A. ∆Gº will be negative at higher Temperatures.
B. ∆Gº will always be positive no matter the temperature.
C. ∆Gº will be negative at lowerTemperatures
D. ∆Gº will always be negative no matter the temperature
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.
3. When will the ∆Gº be negative for a reaction with a +∆Hº and a +∆Sº...
1. Determine the ∆Sº using Appendix G for the following reaction. C2H5OH(l) + 3 O2(g) --> 2 CO2(g) + 3 H2O(l) Report your answer to three sig figs. Omit unit labels. Only add a - number is the sign is negative. Adding a + to a positive answer messes up the grading. 2. Which of the following equations will have a negative ∆S? A. 3 H2(g)+ N2(g) --> 2 NH3(g) B. C6H6(l)--> C6H6(g) C. NH4OH(s)--> H2O(l)+ NH3(g) D. NaCl(s) -->...
If ∆Hº = 220 kJ/mol and ∆Sº = –150 J/mol•K, calculate ∆Gº, in units of kJ/mol, at 25ºC
- The reaction N2(g) + 3 F2 (g) → 2 NF3 (9), as A Hºis -248.6 kJ mol- and ArSº is -278.7 JK moll. Calculate the temperature at which the eaction will be at equilibrium. Assume A Hº and A Sº are independent of temperature. - Condensation of a gas to a liquid is an example of a process for which (choose one or more): (a) AH, AS, and AG are negative at all temperatures. (b) AH, AS, and AG...
Question 5 For a chemical reaction, AH° 238 = +135.7 kJ and A Sº= +0.379 kJ/K. Calculate A Gº 800 A-167.5 kJ B.-132.8 kJ C. +133.9k D-212.8 kJ E.-192.3 kJ ОА OB ОС OD ОЕ Question 6 0.5 pt For a chemical reaction, Hº 238 = +135.7 kJ and A Sº = +0.379 kJ/K. At what temperature will A Gº=0? A. 213K B. 402K C.358 K D. 470K E. 251K ОА OB Ос OD ОЕ Question 7 0.5 For a...
Indicate the sign of Gº at low and high temperatures for the following reactions: Reaction Low T High T NH3(g) + HCl(g) NH4Cl(s) Hº < 0 CaCO3(s) CaO(s) + CO2(g) Hº > 0 CH3OH(l) CH3OH(g) 2Cl2(g) + 7O2(g) 2Cl2O7(l) Hº > 0
Thermodynamics Practice Problems 1. Predict the sign of AS.(positive or negative) for the following reactions a 2 Mg(s) +,(@) 2 Mgo (s) AS b. CH206(s) → 2C,H,OH(I) + 2003(g) AS c. 2 NH3(g) + CO2(g) → H2O(l) + NH CONH3(aq) AS d. Cu(s) (at 100°C) → Cu(s) (at 25°C) AS 2. Which two variables can indicate if a reaction is spontaneous or not? 3. The second law of thermodynamics tells us that: a Energy is conserved. b. The entropy of...
Estimate ∆Gº at 750.0 K for the reaction SO2(g) + 3CO(g) → COS(g) + 2CO2(g) given that at 25.00 ºC ∆Hº=–300.8 kJ/mol and ∆Gº=–246.3 kJ/mol. A –756.7 kJ/mol B –163.7 kJ/mol C –119.6 kJ/mol D –246.3 kJ/mol E –54.5 kJ/mol
Everything is correct now... Can you please help me out with these? 1)The value of Hº for the decomposition of calcium chloride into its constituent elements, CaCl2 (s) Ca (s) + C12 (8) is_ A) +795.8 B) 0.00 C) -795.8 D) +397.9 E) -3979 kJ/mol. 2)The value of Gºat 25 °C for the decomposition of gaseous sulfur trioxide to solid elemental sulfur and gaseous oxygen, 2503 (g) 28 (s, rhombic) + 302 (g) is_ kJ/mol. A) -740.8 B)-370.4 C) +740.8...
2. Decide whether each of the following statements is true or false. If false, rewrite it to make it true. a. Entropy of the universe increases in all spontaneous reactions. wo False If entropy is bw enough it con be spontaneous, b. Reactions with a negative free energy change (A-Gº <0) are product-favored and occur with rapid transformation of reactants to products. True c. An exothermic reaction will always be spontaneous. I NO when AH is negative the reaction can...
The Temperature Dependence of Chemical Equilibrium For an equilibrium reaction: A+B Kcto the following graph was obtained. Ink 0.002 0.006 0.008 0.01 0.004 1/1 Ink = -AH° + AS RTR Given the above relationship, use the graph to identify which of the following statements are "true" or "false" in this specific case. All statements refer to the forward reaction (proceeding left to right, as given) corresponding to the equilibrium constant K. The reaction is exothermic. As the temperature is decreased,...