Answered: SURFACE TENSION: I. A decrease is due…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Choices:

I only

II only

III only

I and II

II and III

I and III

I, II, III

None of the above

5. SURFACE TENSION: I. A decrease is due to the weakening of the hydrogen bonds of water molecules II. It is increased when a surfactant is added III. Soap lowers surface tension of water resulting to the shrinkage of molecules on the surface

6. SAPONIFICATION: I. Can be carried out with HCl II. NaOH undergoes hydrolysis III. Its principle is used to determine the number of milligrams of KOH required to neutralize the fatty acids from the complete hydrolysis of 1g of fat

7. HYDROGENATION: I. Involves hydrogen addition across carbon-carbon double bonds II. The removal of a double bond results to an increase in melting point III. Favors the absorption of vitamins in the structure

8. RANCIDITY: I. Oxygen acts as an oxidizing agent at carbon to carbon double bonds II. The products are glycerol and carboxylic acids III. Can be carried out by a certain enzyme

Definition Definition Class of organic compounds that contain a carboxyl group ( - COOH ) and has a general formula R - COOH or R - CO 2 H , where R refers to the alkyl, alkenyl, aryl, or other groups. They can undergo different chemical reactions, such as acid-base reactions, esterification, and oxidation. These are essential components of living organisms, playing important roles in metabolic processes, signaling, and as pharmaceuticals.

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