Based on the AHand AS values for a given chemical reaction, it is possible to predict whether the reaction is spontaneous or not at various temperatures. Which one of the following statements has the most correct answers? (A) If AH and AS are both positive, the reaction will always be spontaneous (B) If AH and AS are both positive, the reaction will be spontaneous at a high enough temperature (C) If AH is negative and AS is positive, the reaction will always be spontaneous (D) If AH and AS are both negative, the reaction will always be spontaneous (E) Both (B) and (C)

Based on the AHand AS values for a given chemical reaction, it is possible to predict whether the reaction is spontaneous or not at various temperatures. Which one of the following statements has the most correct answers? (A) If AH and AS are both positive, the reaction will always be spontaneous (B) If AH and AS are both positive, the reaction will be spontaneous at a high enough temperature (C) If AH is negative and AS is positive, the reaction will always be spontaneous (D) If AH and AS are both negative, the reaction will always be spontaneous (E) Both (B) and (C)

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

Be sure to answer all parts. For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂), perform the following calculations. (a) Calculate the AS at 298 K (AH° = −220. kJ/mol and AG° = −206 kJ/mol). kJ/mol K (b) Assuming that AS and AH change little with temperature, calculate AG at 450. K. kJ/mol
For the reaction given below, AH --1516 kJ at 25"C und AS--432.8 J/K at 25°C, This reaction is spontaneous SiH,(g) + 2 0:(g) SiO;()+2 H,0(6)
ences to access important values if needed for this question. When 5.42 g of potassium bromide (KBr) is dissolved in 114g of water in a styrofoam calorimeter of negligible heat capacity, the temperature drops from 25.00 to 23.03 °C. Based on this observation, calculate q for the water and AH° for the process, assuming that the heat absorbed by the salt is negligible, KBr(s) K*(aq) + Br (aq) The specific heat of water is 4.184] °C¹g¹. Give the answers in kJ. ан, о AHO
What factors must you consider to determine the sign of AS for the reaction 2N₂O(g) → 2N₂(g) + O₂(g) if it occurs at constant temperature? Select all that apply.. DODSEDO (a) the number of moles of products versus reactants: in this case the number of moles increases (b) the number of moles of products versus reactants: in this case the number of moles decreases (c) the state of the products versus reactants (d) the complexity of the molecules: N₂O is more complex than either N₂ or O₂ (e) the complexity of the molecules: N₂O is less complex than either N₂ or O₂ (f) the total number of valence electrons: N₂O has more valence electrons than N₂ and O₂ (g) the total number of valence electrons: N₂O has less valence electrons than N₂ and O₂ AS is expected to be
(a) Calculate AS° for the reaction of Na(s) and Cl2(g) to form NaCI(s). ( S°for Na (s), Cl2(g) and NaCl(s) are 51.3, 223.0, and 72.1 J/mol.K respectively) (b) Explain why this reaction takes place given your answer to part (a).
Without consulting Appendix B, arrange each group in or-der of increasingstandard molar entropy (S°). Explain.(a) Graphite, diamond, charcoal(b) Ice, water vapor, liquid water(c) O₂, O₃, O atoms
Calculate AGran in kJ, at 298K for the following reaction using the conditions given below. R = 8.314 J/mol.K SO3 (g) + H₂O (9) H₂SO4 (1) AGran = -90.5 (A) mol Pso3 = 0.20 atm, Pu,o = 0.88 atm Express your answer to one decimal place.
For a particular reaction, AH = -238.4 kJ and AS = -80.0 J/K. Calculate AG for this reaction at 298 K. AG = kJ What can be said about the spontaneity of the reaction at 298 K? The system is spontaneous in the reverse direction. The system is at equilibrium. The system is spontaneous as written.
If AH = -70.0 kJ and AS = -0.300 kJ/K , the reaction is spontaneous below a certain temperature. Calculate that temperature. %3D Express your answer numerically in kelvins.
Be sure to answer all parts. From the following combinations of AH and AS, predict if a process will be spontaneous at a high or low temperature: (a) both AH and AS are negative Process is spontaneous at high and low temperatures. Process is spontaneous at high temperatures and nonspontaneous at low temperatures. Process is nonspontaneous at high and low temperatures. Process is nonspontaneous at high temperatures and spontaneous at low temperatures. (b) AH is negative and AS is positive Process is spontaneous at high and low temperatures. Process is spontaneous at high temperatures and nonspontaneous at low temperatures. Process is nonspontaneous at high and low temperatures. Process is nonspontaneous at high temperatures and spontaneous at low temperatures. (c) both AH and AS are positive Process is spontaneous at high and low temperatures. Process is spontaneous at high temperatures and nonspontaneous at low temperatures. Process is nonspontaneous at high and low temperatures.…
(1) What are the thermodynamic quantities of a system that affect the amount and sign of the internal energy change of a system? (ii) Consider the process represented by the following chemical equation: H,O() NH,NO3(s)· NH,"(aq) + NO5(aq) AH = +28.05 kJ/mol Using correct thermodynamic terminology, explain the sign of A Tsurroundings for this process.
In the recovery of iron from iron ore, the reduction of the ore is actually accomplished by reactions involving carbon monoxide. Use the following thermochemical equations, Fe,O,G) + 3C0(g) 2Fe() +3CO(g) AH° =-28 kJ 3Fe,O,6) + CO(g) 2Fe,O,() + CO,(g) AH° = -59 kJ FezO,() + CO(g) 3FcO(s) + CO,(g) ÄH° =+38 kJ to calculate AH° for the reaction FeO() + CO(g)– Fe(s) + CO2(g) AH° = i kJ eTextbook and Media Attempts: 0 of 15 used Submit Answer Save for Later 山T四 A O S OCT étv 26 MacBook Air DII DD 吕口 888 F9 F10 F7 F8 F4 F5 F2 F3