Which of the following would have a positive change in entropy? Select one: O a. Burning of candle wax O b. Reaction of N₂(g) and H₂(g) to form NH3(g) O c. AgNO3(aq) + NaCl(aq) -> AgCl(s) + NaNO3(aq) O d. Dissolution of CO₂ in water Which of the following has the highest molar entropy? Select one: O a. Ar(g) O b. Liquid n-pentane OC. Liquid water O d. Li(s) Which of the following is TRUE about the Gibbs Free energy? Select one: O a. Its absolute value is smallest at equilibrium O b. It has the same units as entropy O c. It the amount of energy needed for a spontaneous reaction to occur O d. It is positive for spontaneous reactions

Which of the following would have a positive change in entropy? Select one: O a. Burning of candle wax O b. Reaction of N₂(g) and H₂(g) to form NH3(g) O c. AgNO3(aq) + NaCl(aq) -> AgCl(s) + NaNO3(aq) O d. Dissolution of CO₂ in water Which of the following has the highest molar entropy? Select one: O a. Ar(g) O b. Liquid n-pentane OC. Liquid water O d. Li(s) Which of the following is TRUE about the Gibbs Free energy? Select one: O a. Its absolute value is smallest at equilibrium O b. It has the same units as entropy O c. It the amount of energy needed for a spontaneous reaction to occur O d. It is positive for spontaneous reactions

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

Which of the following result in an increase in the entropy of the system? I. H-H II. Br₂(g) → Br₂(7) III. NaBr(s) — Na*(aq) + Br (aq) IV. 02(298 K) → O₂(373 K) V. NH3(1 atm, 298 K) → NH3(3 atm, 298 K) I II, V I, III, IV I, II, III, IV I, II, III, V
1. Ammonia can be made from the reaction of nitrogen and hydrogen: N2 (g) + 3 H2 (g) ⟺ 2 NH3 (g) For this reaction, K = 1.6 x 102 and ΔH = -91.8 kcal/mole at 25oC. Is the reaction endothermic or exothermic? Briefly explain. Is there in increase in entropy, a decrease in entropy, or no change in entropy? Briefly explain. At 25oC, is this reaction product favored or reactant favored? Briefly explain. Do you expect this reaction to be spontaneous at all temperatures? Briefly explain.
For the following reactions, indicate whether the entropy of the system increases, decreases, or remains nearly the same. a. Al3+(aq) + 3 OH-(aq) → Al(OH)3(s)b. CaCO3(s) → CaO(s) + CO2(g)c. Mg(s) + Cu2+(aq) → Mg2+(aq) + Cu(s)
Which one has a large entropy? 0.0200 moles of NaBr dissolved in 2.00 L of water or 0.0200 moles of CaCl 2 dissolved in 2.00 L of water. Explain
1. Please consider 0.15 gm of Constantan (a Cu/Ni alloy widely used in thermocouples, c = 390 J/•K-kg) that cooled through exposure to the laboratory atmosphere (T 22 •C) from 620 C to 20 C. a. Please determine the change in entropy of the Constantan (in J/ K- kg). b. Please determine the change in entropy of the laboratory atmosphere (in J/ K-kg). c. Please determine the change in entropy of the universe (in J/ K-kg). %3D
Benzene is a liquid under standard conditions. The standard enthalpy and entropy changes for the evaporation of liquid benzene to form benzene vapor are +33.9 kJ/mol and 96.3 J/mol · K, respectively. If liquid benzene is placed in a closed container at 78.85°C, which of the following statements is true? The liquid cannot attain equilibrium with its vapor in a closed container. a. b. The liquid will evaporate completely. Liquid benzene will evaporate until the vapor pressure is 1 bar. d. Liquid benzene will not evaporate. e. Liquid and vapor-phase benzene cannot coexist at temperatures greater than or equal to 78.85°C.
Question 6 The mathematical equation that best defines the change in molar entropy of the system is OA. Atrs S = AU + AtrsH/Ttrs O B. Atrs S = AtrsH/Ttrs OC Atrs S=AtrsH - Ttrs D. AH = AU + w E. AH = AU - pAV
Discuss the spontaneity of each process in the following scenarios, based on the use of the Gibbs free energy equation: a. N2 (g) + 3 H2 (g) ← → 2 NH3 (g) , ΔH = -46.11 kJ/molb. An exothermic reaction with an increase in entropyc. A block of solid carbon dioxide subliming to gaseous carbon dioxide
The change in entropy, ΔSrxn∘, is related to the change in the number of moles of gas molecules, Δngas. 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) Δ?gas= ? The entropy, ΔSrxn∘, 1) has little or no change 2) increases 3) decreases B. H2O2(l) ⟶ H2(g)+O2(g) Δ?gas=? The entropy, ΔSrxn∘, 1) has little or no change 2) increases 3) decreases C. C2H2(g)+3O2(g) ⟶ 2CO2(g)+2H2O(l) Δ?gas=? The entropy, ΔSrxn∘, 1) has little or no change 2) increases 3) decreases D. PCl5(s) ⟶ PCl3(l)+Cl2(g) Δ?gas=? The entropy, ΔSrxn∘, 1) has little or no change 2) increases 3) decreases
What will be the Gibbs free energy in KJ/mol if the entropy of the reaction (AS°rxn) is 305.14 KJ/mole and the ethlapy (AH°rxn) is -335.79 J/mol at 26.24 °C?
16. Which among the following represents a positive change in entropy? * O release of thermal energy O a decrease in thermal energy a process that is always spontaneous O an increase in dispersal of matter (molecular disorder)
A) for the reaction MgCo3(s) ---> MgO (s) +CO2 we can say that it is a reaction a. spontaneous b. not spontaneous c.in balance d. indeterminate B) Which substance in the following pair of compounds must have the highest standard molar entropy? C2H2 (g) or C2H6(g) a.C2H2(g) b.C2H6 c.C2H2=C2H6(g) d. undetermined