The sign of ΔG will be negative when
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ΔS is positive and ΔH is positive |
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ΔS is negative and ΔH is positive |
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ΔS is positive and ΔH is negtive |
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ΔS is negative and ΔH is negative |
When ΔH is negative and ΔS is positive, the sign of ΔG will always be negative therefore option c is correct answer.
The sign of ΔG will be negative when ΔS is positive and ΔH is positive ΔS is...
What combinations of positive or negative ΔH and positive or negative ΔS can indicate a spontaneous reaction? Choose one or more:–ΔH, –ΔS+ΔH, –ΔS–ΔH, +ΔS+ΔH, +ΔS
For the conversion of ice to water at 0°C and 1 atm, ΔG is zero, ΔH is positive, and ΔS is positive. ΔG is zero, ΔH is positive, and ΔS is negative. ΔG is negative, ΔH is positive, and ΔS is negative. ΔG is positive, ΔH is zero, and ΔS is positive.
2. For a process where ΔH⁰sys < 0 and ΔS⁰sys> 0, when is the sign on ΔG⁰sys < 0? a. ΔG⁰sys is never less than zero b. ΔG⁰sys < 0 for all temperatures c. ΔG⁰sys < 0 for low temperatures d. ΔG⁰sys < 0 for high temperatures 3. For a process where ΔH⁰sys < 0 and ΔS⁰sys< 0, when is the sign on ΔG⁰sys < 0? a. ΔG⁰sys < 0 for high temperatures b. ΔG⁰sys < 0 for all temperatures...
For a process, ΔS is positive and ΔH is negative. This process: Select one: a. is spontaneous at very high temperatures b. is spontaneous at all temperatures c. is not spontaneous at any temperature d. is at equilibrium e. is spontaneous at very low temperatures
Calculate ΔG° for a reaction that has a ΔS° of 142.6 J/K and a ΔH° of 95.7 kJ occurring at standard conditions.
Consider a reaction that has a positive ΔH and a negative ΔS. Which of the following statements is TRUE? This reaction will be spontaneous only at high temperatures. This reaction will be nonspontaneous at all temperatures. This reaction will be nonspontaneous only at high temperatures. This reaction will be spontaneous at all temperatures.
Consider a reaction that has a negative ΔH and a positive ΔS. Which of the following statements is TRUE? This reaction will be spontaneous only at low temperatures. This reaction will be nonspontaneous at all temperatures. This reaction will be spontaneous at all temperatures. This reaction will be spontaneous only at high temperatures.
Calculate ΔG°R for: (using: ΔG°R = ΔH°R - T ΔS°R ) (Standard T and please show all work!) 2KClO3 (s) --> 2KCl (s) + 3O2 (g)
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
For a certain chemical reaction, ΔH∘=−39.0kJ and ΔS∘=−84.0J/K Calculate ΔG∘ for the reaction at 298 K. Is the reaction spontaneous at 298 K under standard conditions?