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Chapter 5: Q21 P (page 205)

a. For which reaction in each set will ∆S° be more significant?

b. For which reaction will ∆S° be positive?

Short Answer

Expert verified
  2. Noun

Step by step solution

01

 Definition of ∆S°-

Entropy is a measure of a system's freedom of motion.

∆S° = products' freedom of motion minus reactants' freedom of motion

02

 ∆S° value will be more significant if the number of molecules of reactant differs from the number of molecules in the product.

Also, we will see at which reaction ∆S° is positive.

Therefore, ∆S° will be more significant for the above reactions.

03

None of the four reactions have a ∆S°.

The product must have more freedom of motion than the reactant in order to have a positive S°. In other words, there should be more product molecules than reactant molecules.

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Most popular questions from this chapter

Question: Which of the following are electrophiles, and which are nucleophiles?

Question: a. Which of the monosubstituted cyclohexanes in Table 3.9 on p. 128 has a negative ∆G° for the conversion of an axial-substituted chair conformer to an equatorial-substituted chair conformer?

b.Which monosubstituted cyclohexane has the most negative ∆G° for this conversion?

c. Which monosubstituted cyclohexane has the greatest preference for an equatorial position?

d. Calculate ∆G° for the conversion of “axial” methylcyclohexane to “equatorial” methylcyclohexane at 25 °C.

Question: Identify the nucleophile and the electrophile in the following acid–base reactions:

a. Which is the most stable: 3,4-dimethyl-2-hexene, 2,3-dimethyl-2-hexene, or 4,5-dimethyl-2-hexene?

b. Which compound has the largest heat of hydrogenation?

c. Which compound has the smallest heat of hydrogenation?

Draw curved arrows to show the flow of electrons responsible for the conversion of the reactants to products
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