4. Which of the following statements is never true for a spontaneous process? I. AS, >O...
For a spontaneous process, which of the following MUST be true? (select all that apply) Select all that apply: Ο ΤΔ.S > ΔΗ AG > 0 AS univ> Asys > ASSU
4. Which of the following is consistent with a spontaneous endothermic reaction? (A) AH> 0, AS <0, AG <0 (D) AH<0, AS > 0, AG>O (B) AH > 0, AS > 0, AG <0 (E) AH>0, AS <0, AG>0 (C) AH<0, AS <0, AG<0 5. For the reaction H, (g) +S (8) HS (g), AF- -20.2 kJ/mol and AS = +43.1 J/K mol. Which of these statements is true? (A) The reaction is only spontaneous at low temperatures. (B) The...
13 of 15 Kp = 1.73x10-5 for a reaction. Which of the following must be true? O AGⓇ<0 O AG°=0 O AG°>0 O AGº=1
QU Which of the following statements about this non-spontaneous reaction at 25°C are true? 20,42 (0) 50,(a) →400,) + 2H20(e) A AS >O, AS >, the man is always spontaneous B. AS > 0, AS O the nun is spontaneous when Syl> nal CASO, ASR, the nan is never spontaneous D. ASO, ASgure >, the nun is spontaneous when SunSul EASO, AS gure>, the nun is spontaneous when IS ! Question 0.1/0.1 pts Which of the following statements about this...
The exothermic reaction, A--> has AG<0. Which of the following statements are true AH<0 for the reaction AS must be greater than zero AS could be greater than or less than than zero the reaction is spontaneous in the reverse direction
14. Which of the following is not a state function? a. Internal Energy b. Free Energy c. Enthalpy d. Entropy e. Heat 15. The second law of thermodynamics states that a. the entropy of a perfect crystal is zero at 0 K b. the entropy of the universe is constant. c. the energy of the universe is increasing. d. the entropy of the universe is increasing. e. the energy of the universe is constant. 16. Which of the following are...
In a given process A-->B, it is found that AG <0 and AH>0. Which of the following statements are true The process is spontaneous in the forward directon The process is exothermic 0 As for the process must be less than zero As for the process could be either less than zero or greater than zero
Given the values of AH and As, which of the following changes will be spontaneous? (i) AH = 25 kJ/mol; AS = 5 J/Kmol; T = 300 k (ii) AH = 25 kJ/mol; AS = 100 J/Kmol; T = 300 k (iii) AH = -10 kJ/mol; AS = 5 J/Kmol; T = 300 k (iv) AH = -10 kJ/mol; AS = -40 J/Kmol; T = 300 k Select one: O a. i and iii only O b. ii and iv...
30) At constant pressure and temperature, which statement is true? A) All reactions for which k < 1 are spontaneous B) All reactions for which AG are spontaneous C) All reactions for which AH<0 are spontaneous. D) All reactions for which AS <0 are spontaneous 11) 11) Consider the galvanic cell, Pb(s) IP20) Cu2+(a) Cu(s). Which one of the following changes to the cell would cause the cell potential to increase (ie, become more positive)? A) increase the mass of...
Which of the following statements must be true for a spontaneous process? Choose all that apply: ΔGsys < 0 ΔSuniv > 0 ΔSsys > 0 ΔHsys - TΔSsys < 0 ΔHsys < 0