In terms of the algebraic signs of delta H and delta S, under which of the following circumstances will a change be spontaneous?
a) at all temperatures?
b) at low temperatures but not high temperatures?
c) at high temperatures but not at low temperatures?
In terms of the algebraic signs of delta H and delta S, under which of the...
For the reaction H2(g) + S(s) --> H2S(g) delta H = -20.2 kJ mol-1 and delta S =+43.1 J K-1mol-1. Which of the following statements is true? The reaction is spontaneous at all temperatures. delta G becomes less favorable as T is raised. The reaction is only spontaneous at high temps. The reaction is only spontaneous at low temps. The reaction is at equilibrium at 25 C under standardconditions. Please explain why too. Thank you, feedback will beawarded as soon...
For a particular chemical reaction Delta H =6.8 kJ and Delta S = -29 J/K. Under what temperature condition is the reaction spontaneous? A) When T < -234 K B) When T < 234 K C) The reaction is spontaneous at all temperatures D) When the reaction is not spontaneous at any temperatures E) When T > 234 K
For the reaction: 2C4H10(g)+13O2(g)-->8CO2(g)+10H20(g) delta H is -125kJ/mol and delta S is 253 J/K*mol. This reaction is_. a) spontaneous at all temperatures b) spontaneous only at high temperatures c) spontaneous only at low temperatures *I know the answer is A, but I need a detailed explanation as to why that is the correct answer.
What are the signs (+ or -) for delta H, delta S, and -T(delta S) which are required to produce the following signs (+ or -) of delta G. Think about the equation delta G = delta H - T(delta S). 1. If delta G is negative 2. If delta G is either positive or negative (there are 2 solutions) 3. If delta G is negative
What is delta S?
Predict the signs of Delta S and Delta H for the freezing of water into ice at 273 K. a. Delta H > 0 and Delta S < 0 b. delta H = 0 and Delta S > 0 c. Delta H < 0 and Delta S < 0 d. Delta H > 0 and Delta S = 0 e. Delta H < 0 and Delta S > 0
Reaction A: This reaction is always spontaneous but proceeds faster at temperature is below 45°C Delta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?Reaction B: this reaction is exothermic and proceed slower at temperature is below 19°CDelta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?Reaction C: crystallization of a pure compound is spontaneous only below -34°CDelta H: Positive? Negative? Unknown? Delta S: Positive? Negative? Unknown?
For a particular chemical reaction Delta H = 6.5 kJ and Delta S = -33 J/K. Under what temperature condition is the reaction spontaneous? When T> 197 K. When T< 197 K. The reaction is not spontaneous at any temperature. When T < -197 K. The reaction is spontaneous at all temperatures.
From the values of delta H and delta S, predict which of the following reactions would be spontaneous at 26C: Reaction A: delta H = 10.5 kJ/mol, delta S = 30.0 J/K*mol Reaction B: delta H = 1.8 kJ/mol, delta S = -113 J/K*mol If either of the reactions is nonspontaneous, can it (they) become spontaneous? If either of the reactions is nonspontaneous but can become spontaneous, at what temperature might it become spontaneous? Please explain how to do this!
Need serious help on these 3! Please help!
Which of the following should have the largest value of S degree? a) SF_6 (g) at 298K b) H_2O (l) at 298K c) He(g) at 298K d) CH_3OH (l) at 298K Which of these changes in the distribution of the nine particles shows an decrease in entropy? Which of these statements is true for this reaction? FeO(s) + CO(g) rightarrow CO_2(g) + Fe(s) Delta H = -11.0 kJ; Delta S = -17.4...
Exercise 18.38-Enhanced-with Feedback 7 of 13> Part E ReviewI ConstantsI Periodic Table In addition, predict under what temperatures (all temperatures, low temperatures, or high temperatures), if any the reaction in each part will be spontaneous. Without doing any calculations, iddentify the signs of ΔSays and ΔSsurr for each of the following chemical reactions. Drag the appropriate items to their respective bins. Reset Help Reaction is spontaneous at all temperatures Reaction is spontaneous at low temperatures Reaction is spontaneous at high...