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Chapter 6: Problem 6.25 (page 237)

Identify the catalyst in each equation.

a.

b.

Short Answer

Expert verified

Answer

  1. The catalyst in the given reaction isH2SO4.
  2. The catalyst in the given reaction is I-.

Step by step solution

01

Step-by-Step SolutionStep 1: Catalyst

The substance used to increase the rate of a reaction without itself undergoing a chemical reaction is named a catalyst.

02

Catalyst in reaction a

Reaction a

The H2Omolecule is participating in the chemical reaction as it gets dissociated into H and OH and gets added to the carbon atoms of the alkene.

Therefore, the species that do not participate in the reaction is H2SO4and hence H2SO4acts as the catalyst.

03

Catalyst in reaction b

Reaction b

In the given reaction, it is clearly observable that the hydroxide ion OH-is involved in the reaction.

The OH-ion replaces Cl from CH3Cl.

Therefore, the catalyst in the given reaction isI-.

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Most popular questions from this chapter

Use curved arrows to show the movement of electrons in each equation.

a.

b.

Label each statement as true or false. Correct any false statement to make it true.

a. Increasing temperature increases reaction rate.

b. If a reaction is fast, it has a large rate constant.

c. A fast reaction has a large negative 鈭�G掳value.

d. When Eais large, the rate constant k is also large.

e. Fast reactions have equilibrium constants > 1.

f. Increasing the concentration of a reactant always increases the rate of a reaction.

Consider the following energy diagram for the conversion of A鈫�G.

a. Which points on the graph correspond to transition states?

b. Which points on the graph correspond to reactive intermediates?

c. How many steps are present in the reaction mechanism?

d. Label each step of the mechanism as endothermic or exothermic.

e. Label the overall reaction as endothermic or exothermic.

Consider the following energy diagram

  1. How many steps are involved in this reaction?
  2. Label 鈭�H掳and Ea for each step, and label鈭�H掳overall .
  3. Label each transition state.
  4. Which point on the graph corresponds to a reactive intermediate?
  5. Which step is rate-determining?
  6. Is the overall reaction endothermic or exothermic?

As we learned in Chapter 4, propane (CH3CH2CH3)has both 1掳and 2掳hydrogens.

  1. Draw the carbon radical formed by homolysis of each type of C-H bond.
  2. Use the values in Table 6.2 to determine which C-H bond is stronger.
  3. Explain how this information can be used to determine the relative stability of the two radicals formed. Which radical formed from propane is more stable?
See all solutions

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