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Chapter 15: Q. 15.1 (page 510)

Lipids are not soluble in water. Are lipids polar or nonpolar molecules?

Short Answer

Expert verified

The lipids are nonpolar molecules.

Step by step solution

01

An Introduction

Lipids are an organic chemical class that is largely insoluble in water. Lipids are molecules that are composed mostly of carbon, hydrogen, and oxygen and are composed of fats and oils. Triacylglycerols, phospholipids, and sterols are the three primary forms of lipids.

02

Given Information

Lipids are not soluble in water.
We have to find lipids are polar or nonpolar molecules.

03

Determine if lipids are polar or nonpolar molecules 

There is an easily memorable rule when it comes to dissolving a compound: slmllar dlssolves simllar.

This means that polar solvents dissolve polar compounds, while nonpolar solvents dissolve nonpolar compounds.

As you know, water is a polar solvent. It does not dissolve llplds. Therefore, llplds are nonpolar molecules.

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Most popular questions from this chapter

Panose is a trisaccharide that is being considered a possible sweetener by the food industry.

a. What are monosaccharide units A, B, and C?

b. What type of glycosidic bond connects monosaccharides A and B?

c. What type of glycosidic bond connects monosaccharides B and C?

d. Is the structure is drawn as 伪or尾-panose?

e. Why would panose be a reducing sugar?

Safflower oil is polyunsaturated, whereas olive oil is monounsaturated. Why would safflower oil have a lower melting point than olive oil?

15.81 Identify the components (1to 6) contained in each of the following lipids (a to d):

1. glycerol

2. fatty acid

3. phosphate

4. amino alcohol

5. steroid nucleus

6. sphingosine

a. estrogen

b. cephalin

c. wax

d. triacylglycerol

How do the unsaturated fatty acids in the phospholipids affect the structure of cell membranes?

Draw the condensed structural formulas for all the products that would be obtained when the triacylglycerol in problem 15.37undergoes complete hydrolysis.
See all solutions

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