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Chapter 24: Problem 22

(a) Is the compound \(\mathrm{CBr}_{3} \mathrm{CH}=\mathrm{CHCH}_{3}\) saturated or unsaturated? Explain. (b) What is wrong with the formula \(\mathrm{CH}_{2}=\mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3} ?\)

Short Answer

Expert verified
(a) The compound \(CBr_{3}CH=CHCH_{3}\) is unsaturated because it contains a carbon-carbon double bond. (b) The formula \(CH_{2}=CH_{2}CH_{2}CH_{3}\) is incorrect because the second carbon atom has more than the allowable number of bonds (5 instead of 4).

Step by step solution

01

First, look at the given chemical formula for the compound: CBr3CH=CHCH3. We will identify the types of bonds present in the compound and determine if it contains any double or triple bonds. #Step 2: Identifying the bond types in CBr3CH=CHCH3#

In the compound's formula, we can see a double bond between two carbon atoms, represented by "CH=CH." The presence of this double bond indicates that the compound is unsaturated. #Step 3: Conclusion about CBr3CH=CHCH3 compound#
02

The compound CBr3CH=CHCH3 is an unsaturated compound because it contains a carbon-carbon double bond. #Step 4: Analyzing the formula CH2=CH2CH2CH3#

Now, we will analyze the given chemical formula CH2=CH2CH2CH3. In particular, we will examine the bonds between the carbon atoms and identify any issues with the formula. #Step 5: Identifying the bond issue in CH2=CH2CH2CH3#
03

When we examine the bonds in CH2=CH2CH2CH3, we can see that there is a double bond between the first two carbon atoms, represented by "CH2=CH2." However, the rest of the formula shows single bonds between the remaining carbon atoms. This means that the second carbon atom is forming an additional bond beyond its maximum capacity. Carbon can form a maximum of 4 bonds, but in this formula, the second carbon atom is forming 5 bonds (double bond with the first carbon atom, single bond with the third carbon atom, and two hydrogen atoms). This is not possible according to the valence rules for carbon. #Step 6: Conclusion about the formula CH2=CH2CH2CH3#

The formula CH2=CH2CH2CH3 is incorrect because the second carbon atom, with its existing double bond, has more than the allowable number of bonds. It should either have a single bond with the first carbon atom or form one less bond in some other way.

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