At constant pressure and temperature, which statement is true? All reactions for which ΔS < 0...
At constant pressure and temperature, which statement is true?
| All reactions for which ΔS < 0 are spontaneous. |
| All reactions for which K < 1 are spontaneous. |
| All reactions for which ΔG < 0 are spontaneous. |
| All reactions for which ΔH < 0 are spontaneous. |
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At constant pressure and temperature, which statement is
true?
All reactions for which ΔS < 0...
QUESTIONS At constant pressure and temperature, which statement is true? A. All reactions for which AH<0...
QUESTIONS At constant pressure and temperature, which statement is true? A. All reactions for which AH<0 are spontaneous B. All reactions for which ASKO are spontaneous. C. All reactions for which AG<0 are spontaneous. D. All reactions for which K> 1 are spontaneous.
A process at constant T and P can be described as spontaneous if ΔG < 0...
A process at constant T and P can be described as spontaneous if ΔG < 0 and nonspontaneous if ΔG > 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm. (Hint: Use the data below to calculate ΔH and ΔS [assumed independent of temperature and equal to ΔH° and ΔS°, respectively] and then use the definition of ΔG.) 3 PbO2(s) → Pb3O4(s) + O2(g) ΔHf° (kJ mol-1) -277.0...
30) At constant pressure and temperature, which statement is true? A) All reactions for which k...
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...
A process at constant T and P can be described as spontaneous if ΔG < 0...
A process at constant T and P can be described as spontaneous if ΔG < 0 and nonspontaneous if ΔG > 0. Over what range of temperatures is the following process spontaneous? Assume that gases are at a pressure of 1 atm. (Hint: Use the data below to calculate ΔH and ΔS [assumed independent of temperature and equal to ΔH° and ΔS°, respectively] and then use the definition of ΔG.) PCl3(g) + Cl2(g) → PCl5(g) ΔHf° (kJ mol-1) -287.0 -374.9...
For the values give for ΔH and ΔS, calculate ΔG foreach for each of the following reactions at 298 K. If the reactionis...
For the values give for ΔH and ΔS, calculate ΔG foreach for each of the following reactions at 298 K. If the reactionis not spontaneous under standard conditions at 298 K, at whattemperature (if any) would the reaction become spontaneous? a) 2PbS(s)+3O2(g) ---> 2PbO(s)+2SO2(g) ΔH= -844kj ; ΔS = -165 J/K b)2POCl3(g)--->2PCl3(g)+O2(g) ΔH= 572kJ ; ΔS= 179 J/K
1) In a biochemical reaction in which ΔH < 0 and ΔS > 0, Select one:...
1) In a biochemical reaction in which ΔH < 0 and ΔS > 0, Select one: a. the reaction is spontaneous b. the reaction is endothermic c. the reaction is endergonic d. ΔG is positive 2) NAD+ and FAD are often referred to as Select one: a. redox proteins b. polymers c. reduced dinucleotides d. electron-carrying coenzymes 3) What is [P]/[R] when ΔG = ΔG°´? Select one: a. –1 b. 0 c. 1 d. 2.3 4) For the binding reaction...
Use the data in Appendix B in the textbook to calculate ΔH∘ and ΔS∘ for each...
Use the data in Appendix B in the textbook to calculate ΔH∘ and ΔS∘ for each of the following reactions. From the values of ΔH∘ and ΔS∘, calculate ΔG∘ at 25 ∘C and predict whether each reaction is spontaneous under standard-state conditions. Part A 2SO2(g)+O2(g)→2SO3(g) Express your answer using four significant figures. ΔH∘ = kJ Part B Express your answer using four significant figures. ΔS∘ = J/K Part C Express your answer using four significant figures. ΔG∘ = kJ Part...
Reactions in which a substance decomposes by losing CO2 are called decarboxylation reactions. The decarboxylation of...
Reactions in which a substance decomposes by losing CO2 are called decarboxylation reactions. The decarboxylation of acetic acid proceeds as follows. CH3COOH(l)-->CH4(g)+CO2(g) Calculate the minimum temperature at which this process will be spontaneous under standard conditions. Assume that ΔH° and ΔS° do not vary with temperature. (CH3COOH(l): ΔH°f=-487.0 kj/mol, ΔS°=159.8J/mol K).
For a particular reaction, ΔH = -32 kJ and ΔS =-98 J/K. Assume that ΔH and ΔS do not vary withtemperature. A) At wha...
For a particular reaction, ΔH = -32 kJ and ΔS =-98 J/K. Assume that ΔH and ΔS do not vary withtemperature. A) At what temperature will the reaction have ΔG= 0? B) If T is increased from that in part A, will the reaction bespontaneous or nonspontaneous?
1a) For which of the following reactions is ΔSo > 0? a. 2 C2H6(g) + 7...
1a) For which of the following reactions is ΔSo > 0? a. 2 C2H6(g) + 7 O2(g) à 4 CO2(g) + 6 H2O(g) b. H2CO(g) + O2(g) à CO2(g) + H2O(l) c. N2(g) + 3 H2(g) à 2 NH3(g) d. NH3(g) + HI(g) à NH4I(s) 1b) For a particular chemical reaction ΔH = 7.0 kJ and ΔS = –17 J/K. Under what temperature condition is the reaction spontaneous? a) When T > 412 K. b) The reaction is not spontaneous...
QUESTIONS At constant pressure and temperature, which statement is true? A. All reactions for which AH<0 are spontaneous B. All reactions for which ASKO are spontaneous. C. All reactions for which AG<0 are spontaneous. D. All reactions for which K> 1 are spontaneous.
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...
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