(a)
Interpretation:
From the given reaction, the reaction which has larger
Concept introduction:
Entropy: it is a measure of the freedom of motion in a system. Restricting the freedom of motion of a molecule depresses its entropy.
(b)
Interpretation:
It has to be checked that the reactions which have whether positive or negative
Concept introduction:
Entropy: it is a measure of the freedom of motion in a system. Restricting the freedom of motion of a molecule depresses its entropy.
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EP ESSENTIAL ORG.CHEM.-MOD.MASTERING
- Q7. Some spontaneous reactions take 20 million years for half of the reactants to be converted into products while other reactions take 10 seconds. What is the basis for this difference in rate? A. Reactions take longer the closer their ΔG is to zero. B. The rate is dependent upon the concentration of substrate molecules. C. Reactions where substrate molecules can more readily reach the transition state occur faster. D. The rate of the reaction is dependent upon a supply of energy - thus coupled reactions that utilize ATP are the fastest.arrow_forwardConsider the two energy diagrams below. Rxn Rxn (а) (b) a. Which of the two reactions will occur at a faster rate? How do you know? b. Compare the delta G° for both reactions. At equilibrium, which reaction, if either, will give you a higher ratio of products to reactants?arrow_forwardFor which reaction in each set will AS° be more significant? For which reaction will AS be positive? 1. A B or A + B C 2. A B +C or A+ B C+ Darrow_forward
- Which of the following is a reaction rate? ∆mol/∆L ∆mol/∆s ∆M/∆V ∆mol/∆garrow_forward1. Predict the sign of ∆S for the following reaction. a. negativeb. positivec. no change 2. What is an intermediate? a.A local maximum on the energy diagram. b. A point on the reaction pathway that has a discrete minima. c.A point half-way between the starting materials and products. d. The highest energy compound on an energy diagram.arrow_forwardWhich reaction represents this energy diagram? 2H,(g) - 0(g) AH-486.3 kJ 2H.O(g) 486.3kJ + 2H2O2 = 2H2(g) + O2(g) O 2H2(g) 2H2(2) + O21e) = = 2H2O + 486.3kJ 486.3kJ + 2H2(e) + O2(g) = 2H20(g) Heat + 2H2O(g) = 2H2(g) + O2(g) 2H20(g) 2H2(g) + O21e) + 486.3kJ Enthalpyarrow_forward
- P12. If Keq for a reaction at 450 C was 3.4x10-³, what would be the standard free energy change at that temperature (in J/mol)? 21265 -21265 34166 -34166 none of the above A. B. C. D. E.arrow_forward4arrow_forwardCan someone draw a energy diagram with the following: Overall reaction is non-spontaneous, it’s 2 steps, 1st step is slow equilibrium (k=1), 2nd is faster than 1st how do I go about this?arrow_forward
- 2 A2B (Green)_+ 3 C2 = 2 A2C (yellow) + 2 BC2 AH = -288 kJ A.The reaction will shift to the left in the direction of reactants and the color observed will be green. B.The reaction will shift to the right in the direction of products and the color observed will be yellow. C.The reaction will shift to the left in the direction of reactants and the color observed will be yellow. D.The reaction will shift to the right in the direction of products and the color observed will be green. D. No effect will be observed. I D. Focus Warrow_forwardendergonic or exergonic. The graph will look the same, but now factors in entropy change. Endergonic reactions have a positive change in free energy, and exergonic reactions have a negative change in free energy. 1. Which of the following diagrams represents an endergonic reaction? rxn progress rxn progress 2. Identify each diagram as exergonic or endergonic. And identify which step is the slow step, if applicable? G G G G rxn progress гхn progress rxn progress rxn progress exergonic or endergonic? exergonic or endergonic? exergonic or endergonic? exergonic or endergonic? which is the slow step? which is the slow step? which is the slow step? which is the slow step? step 1 or step 2 step 1 or step 2 step 1 or step 2 step 1 or step 2 3. Match the labeled parts of the reaction coordinate diagram with the terms. reactants: D products: C intermediate(s): E transition state(s): A rxn progressarrow_forward8. Compound (A) rearranges to compound (B) spontaneously. a) Draw the mechanism using curved arrows, that describes how this rearrangement can occur. (Hint: two shifts are required to obtain the product). 3 I. H Br H3C Br mago b) What makes the formation of the previous product spontaneous (ie. why is the product more stable than the reactant)?arrow_forward
- Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning