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Question 11 Which of the following would indicate a spontaneous Redox reaction? O A. Eo =...
36 5 points For which of the following conditions will a reaction be non-spontaneous at All temperatures? O A reaction cannot be non-spontaneous at all temperatures. O AH is negative, AS is positive O AH is positive, AS is positive AH is positive, AS is negative O AH is negative, AS is negative Previous
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...
5 of 15 A reaction is non-spontaneous. What can you conclude about the reverse reaction? O It is spontaneous. It must be exothermic O It must have an increase in entropy O It is in equilibrium. 6 of 15 Based on the AG calculation, a student determined that a synthesis reaction should be spontaneous. When the student tries out the reaction, however, nothing happens. Which explanation is most plausible? O the student probably made a mistake in the calculation O...
4. A voltaic cell employs the following redox reaction: 2 Fe3+(aq) + 3 Mg(s) → 2 Fe(s) + 3 Mg2+(aq) What is the number of electrons that have been transferred in this redox reaction? 5. Use the following reduction potentials to determine if the reaction in Question 4 represents a voltaic or electrolytic cell and if the reaction is spontaneous or non-spontaneous. Fe3+(aq) + 3 e−(aq) → Fe(s) Eo = −0.036 V Mg2+(aq) + 2 e−(aq) → Mg(s) Eo =...
In which case below, a redox reaction is not necessarily a spontaneous reaction? (Hint, the reaction may not be under standard condition.) A. ∆G is negative B. E > 0 C. K > 1 D. K > Q E. None of above
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...
QUESTION 17 Which of the following are redox reactions (select all that apply)? Mg + Cl2 - MgCl2 O H2+02-H20 u C3H6+02- CO2 + H20 UKCI + Ca(NO3)2 – KNO3 +CaCl2 QUESTION 18 Which element is being OXIDIZED in the following reaction? 4HCI + O2-2012 + 2H20 Hydrogen O Chlorine Oxygen O None of the above
8. For the following reaction, CC2(s) + 2H2O(l) + Ca(OH)2(s) + C2H2(g) which is spontaneous at all temperatures, one would predict that a. AG is positive for all temperatures. d. AH is - and AS is for the reaction. b. AH is + and AS is for the reaction. e. AH is + and AS' is- for the reaction. c. AH is - and AS is for the reaction. 9. Calculate the standard absolute entropy, in J/mol K. of Mg:...
on For a chemical reaction that is not spontaneous, it is found that ASys O. Which of the following could be true? < 0 and its magnitude is less than Δ5w Sur>0 and its magnitude is less than ASys ASur 0 and its magnitude is greater than ASsy Surr > 0 and its magnitude is greater than as,ys. ASuniv>0
Indicate which of the following chemical reaction are redox reactions: a. 2Pbs + 3O_2 rightarrow 2PbO + 2SO_2 b. 2AgNO_3 + CuCl_2 rightarrow Cu(NO_3)_2 + 2AgCl c. CH_4 + 2O_2 rightarrow CO_2 + 2H_2 O d. FeCl_2 + 2NaOH rightarrow Fe(OH)_2 + 2NaCl e. 4Fe + 3O_2 rightarrow 2Fe_2 O_3