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Another chemist has found that a particular constant- pressure reaction is barely spontaneous at 390 K....
A certain constant-pressure reaction is barely nonspontaneous at 45 oC. The entropy change for the reaction is 78 J/L. Estimate the AH. 5
For a particular reaction, AH = -16.1 kJ/mol and AS = -21.8 J/(mol-K). Assuming these values change very little with temperature, at what temperature does the reaction change from no to spontaneous in the forward direction? 5 T= Is the reaction in the forward direction spontaneous at temperatures s greater than or less than the calculated temperature? less than O greater than
QUESTION 3 A certain constant-pressure reaction is barely nonspontaneous at 45 oC. The entropy change for the reaction is 78 J/L. Estimate the AH
6) When a spontaneou s, endothermic reaction occurs at constant temperature and pressure, the entropy change of the surroundings is: a) impossible to tell b) positive c) negative d) zero a) ΔG > 0 One finds that the equilibrium constant for a particular reaction increases with increasing temperature. Assuming that the standard reaction enthalpy and entropy are temperature independent, this means that: a) The standard reaction enthalpy is less than zero 8) b) The standard reaction entropy is greater than...
A certain reaction has Delta H degree = -22.50 kJ and Delta S degree = -75.50 J/K. Is this reaction exothermic, endothermic or isothermic (neither)? This reaction is Does this reaction lead to a decrease, an increase, or no change in the degree of disorder in the system? This reaction leads to in the disorder of the system. Calculate Delta G degree for this reaction at 298 K. If this value is less than 1 kJ/mol then enter 0 in...
Thank you Question 5: (1 point) At 390 K, the equilibrium constant, K., for the reaction below is 1.8 x 10-?. PCIs (g) - PC1; (g) + Cl2 (g) Assume a quantity of PCIs (g) is placed in a rigid 10 L vessel and the system is allowed to reach equilibrium at a constant temperature of 390 K. Identify whether each of the following statements is true or false. At equilibrium, if the vessel contains I mole of PCs (g)...
The answer to 19 is C and the answer to 20 is D. 19) Imagine that a particular polymer is found in one of two structures when deposited in a film. We will call the first polymer structure Orwellite. Under standard conditions, Orwellite converts into a more extended version called Kubnte in the reaction: Orwelite → Kubrite. StructureAH) (k/mol S° /mol K) AG (k/mol) 131 - 1984 Orwellite -300 70.0 2001 Kubritedata not given Use the data above to find...
Another reaction has an activation energy of 54.6 kJ/mol. The value of k at 25.0 °C is 4.23 × 10−2 s−1. At what temperature will the value of k be 1.15 × 10−2 s−1? Before working the problem, decide if the answer is less than or greater than 25.0 °C.
A certain reaction has Ho = 79.70 kJ and So = -55.80 J/K. (a) Is this reaction exothermic, endothermic or isothermic (neither)? This reaction is ---Select--- exothermic endothermic isothermic . (b) Does this reaction lead to a decrease, an increase, or no change in the degree of disorder in the system? This reaction leads to ---Select--- a decrease an increase no change in the disorder of the system. (c) Calculate Go for this reaction at 298 K. If this value is less...
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...