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Chapter 5: Q59P (page 223)

a. Which of the following reactions will have the larger 螖S掳 value?

b. Will the 螖S掳 value be positive or negative?\

Short Answer

Expert verified

a) B will have the larger螖S掳value. As in A reactant and product are same but in B these are different.

b) In B Product has greater freedom of motion then it has 螖S掳 value positive.

Step by step solution

01

What is ΔS° value

S value is always positive. But 螖S掳 denotes change in entropy. Entropy means the degree of randomness and disorder of the molecules. It can be negative or positive. If the products are less than the reactants then disorder decreases so 螖S掳 value becomes negative. If the reactant and products are in same number then the 螖S掳 value becomes zero. If the products are more in number than the reactant then 螖S掳 value will be positive.

02

Final answer

a)

A) In this the number of reactants and products are same so It has zero 螖S掳 value.

B) In this products are more than reactants so that it has larger 螖S掳 value.

b)

A) In this the number of reactants and products are same so It has zero 螖S掳 value. So in this 螖S掳 value is neither positive nor negative.

B) In this products are more than reactants so that it has larger 螖S掳 value. So in this 螖S掳 value is positive.

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Most popular questions from this chapter

By following the curved red arrows, draw the product(s) of each of the following reaction steps. Also, indicate which species is the electrophile and which is the nucleophile.

a. Draw the condensed structures and give the systematic names for all the alkenes with molecular formula C6H12, ignoring stereoisomers.

(Hint:There are 13.)

b. Which of the alkenes have Eand Zisomers?

c. Which of the alkenes is the most stable?

d. Which of the alkenes is the least stable?

How many of the following names are correct? Correct the incorrect names.

a. 3-pentene

b. 2-octene

c. 2-vinylpentane

d. 1-ethyl-1-pentene

e. 5-ethylcyclohexene

f. 5-chloro-3-hexene

g. 2-ethyl-2-butene

h. (E)-2-methyl-1-hexene

i. 2-methylcyclopentene

Draw structures for the following:

a. (2E,4E)-1-chloro-3-methyl-2,4-hexadiene

b. (3Z,5E)-4-methyl-3,5-nonadiene

c. (3Z,5Z)-4,5-dimethyl-3,5-nonadiene

d. (3E,5E)-2,5-dibromo-3,5-octadiene

a. For a reaction with 鈭咹掳 = -12 kcal/mol and 鈭哠掳 = 0.01kcal mol-1 K-1, calculate the 鈭咷掳 and the equilibrium constant at: 1. 30 掳C and 2. 150 掳C.

b. How does 鈭咷掳 change as T increases?

c. How does Keq change as T increases?
See all solutions

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