False True An exothermic reaction is always spontaneous. of a substance increases when a solid melts into a liquid at any temperature. Product formation is never favored in a reaction with a negative AH and a positive AS For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. ill have an equilibrium constant that is less than one if AG for the reaction is positive. Entropy increases as the temperature decreases Answer Bank

False True An exothermic reaction is always spontaneous. of a substance increases when a solid melts into a liquid at any temperature. Product formation is never favored in a reaction with a negative AH and a positive AS For an endothermic reaction, a decrease in temperature results in a decrease in the equilibrium constant. ill have an equilibrium constant that is less than one if AG for the reaction is positive. Entropy increases as the temperature decreases Answer Bank

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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For a certain reaction changeH֯ =-83.5 kJ and changeSͦ =-148 j/K. If the values of changeH֯ and changeSͦ can be assumed to be constant for all temperatures, the temperature at which the reaction is at equilibrium is?
Just having trouble with the last part of this question, thanks!
Consider the following equilibrium reaction and its value of ΔH°. 2 SO2 (g) + O2 (g) ⇋⇋ 2 SO3(g) ΔH° = -198 kJ Predict whether the reaction will shift towards the products or reactants with a decrease in the temperature. Select one: a. Shift towards the reactants. b. Shift towards the products. c. The temperature change would have no effect.
The standard Gibbs free energy, ∆??, is:a) The residual energy present in the reactants in the equilibrium stateb) The residual energy present in the products in the equilibrium statec) The difference in the residual energy of the reactants and products inBalance.d) The energy required to convert one mole of reactants into one mole ofproducts[justify the answer you consider correct]
For the reaction:CH4(g) + H2O(g)3H2(g) + CO(g)H° = 206 kJ and S° = 215 J/KThe equilibrium constant, K, would be greater than 1 at temperatures Kelvin.Select above or below in the first box and enter the temperature in the second box. Assume that H° and S° are constant.
please help! use correct sig figs and/or scientific notation! Multiple part question and very confused. Also, at the end what would be the equilibrium constant for this reaction at 2500 ºC.
References] Use the References to access important values if needed for this question. Consider the following system at equilibrium where AH° = 198 kJ, and K, = 2.90x10, at 1150 K: 2SO3(g) =2502(g) + O2(g) If the TEMPERATURE on the equilibrium system is suddenly decreased: The value of K. A. Increases B. Decreases C. Remains the same The value of Q. A. Is greater than K. B. Is equal to K. C. Is less than K. The reaction must: A. Run in the forward direction to restablish equilibrium. B. Run in the reverse direction to restablish equilibrium. C. Remain the same. Already at equilibrium. The concentration of O, will: A. Increase. B. Decrease. C. Remain the same. Submit Answer Retry Entire Group 8 more group attempts remaining Previc 50 hp ins ort sc delets 40
owol-b amella si do tabl 24) A negative sign for AG indicates that, at constant temperature and pressure, A) the reaction must be fast. B) the reaction must be exothermic. C) AS must be greater than zero. D) the reaction must be endothermic. E) the reaction is spontaneous. brod
The conversion of glucose-6-phosphate to fructose-6-phosphate has a K'eg of 0.5. Based on that information, which of the following sets of changes in the terms of the Gibbs equation is correct? O AH°' negative AS" positive AG negative O AH positive AS' negative AG" positive O AH" positive AS" positive AG" negative O AH' negative AS' positive AG" positive
A Moving to another question will save this response. Question 11 A reaction has an equilibrium constant (K) of 58.2. If the entropy of this reaction is-36.7 J/mol"K at a temperature of 317 K, what is the enthalpy of this reaction in kJ/mol? Report your answer to one decimal place. If your answer is negative, make sure to input a negative sign (-). Moving to another question wvill save this response. lyp 144 &
A cvg.cengagenow.com Flipgrid | 50ffc. GRLContent Netflix Favorites My Home 3-Day General.. Netflix Content [Review Topics] [References] 2req Use the References to access important values if needed for this question. 2req The free energy change for the following reaction at 25 °C, when [H*] = 7.21×10³ M and [Hg²*]=1.17 M, is 178 kJ: 2req 2H*(7.21×10-3 M) + Hg(1)→ H,(g) + Hg²*(1.17 M) AG= 178 kJ What is the cell potential for the reaction as written under these conditions? s 2req Answer: V ts 2req Would this reaction be spontaneous in the forward or the reverse direction? ots OM) pts 2reg Submit Answer Retry Entire Group 9 more group attempts remaining pts M) pts
O ENTROPY AND FREE ENERGY Using reaction free energy to predict equilibrium composition D 3/5 Consider the following equilibrium: 2NOC1 (g) - 2NO (g)+ Cl, (g) AG" =41. kJ Now suppose a reaction vessel is filled with 2.68 atm of nitrosyl chloride (NOCI) and 3.74 atm of chlorine (Cl,) at 227. °C. Answer the following questions about this system: rise Under these conditions, will the pressure of Cl, tend to rise or fall? fall Is it possible to reverse this tendency by adding NO? In other words, if you said the pressure of Cl, will tend to rise, can that yes be changed to a tendency to fall by adding NO? Similarly, if you said the no pressure of Cl, will tend to fall, can that be changed to a tendency to rise by adding NO? If you said the tendency can be reversed in the second question, calculate the minimum pressure of NO needed to reverse it. | atm Round your answer to 2 significant digits. II