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Flashcards in End of feb test Deck (31)
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1

What is an esterification reaction? (what replaces what; catalyst)

The phenolic (OH) group in the salicylic acid is replaced wit an ester group (from the acetic anhydride); sulfuric acid is catalyst

2

What is the Fe+3 test?

a quantitative test for phenols

3

What is a phenol?

Aromatic cpds. w/ OH group; present in the salicylic acid.

4

What was the positive control for the test? (Synthesis of Aspirin)

The salicylic acid?

5

What color did the salicylic acid turn? (Synthesis of Aspirin)

deep, dark purple

6

What color did the lab synthesized aspirin turn? (Synthesis of Aspirin)

Medium purple

7

What color did the commercial aspirin turn? (Synthesis of Aspirin)

A light purple

8

What was probably the source of the phenol in the commercial aspirin? (Synthesis of Aspirin)

Probably the age of the aspirin; as it ages the aspiring reacts with H2O in air to form salicylic acid

9

What was probably the source of the phenol in the lab synthesized aspirin? (Synthesis of Aspirin)

Probably any unreacted salicylic acid reactant

10

What color is the initial iron (III) ion? (Synthesis of Aspirin)

apple juice color solution

11

What does an unsaturated fat contain?

at least one double bond

12

What do polyunsaturated fats contain?

many double bonds in carbon chain

13

What does a monounsaturated fat contain?

One double bond in carbon chain

14

Which fats are solid at room temperature?

Saturated fat

15

What is do saturated fats contain?

Single bonds

16

What does too much saturated fat lead to?

Heart disease; body can't break down, clogs veins

17

Explain the bomine and addition reaction (Bromination of Fats)

-Adds bromine across the C=C double bonds
-Bromine adds to the C that are connected by double bonds so double bonds are reduced to single bonds

18

Describe the smell of Isopentyl Alcohol + Acetic Acid

Banana

19

Describe the smell of Ethyl Alcohol + Acetic Acid

Sweet, but not good

20

Describe the smell of Methyl Alcohol + salycylic acid

Peppermint smell

21

Why was natural smell better?

Because synthetic was too strong

22

What is dehydration synthesis?

Carboxylic Acid + Alcohol = Ester + Water

23

In a no catalyst dehydration synthesis, what forms water?

Acid gives H and alcoghol give OH to form water

24

In a Fischer acid catalyst dehydration synthesis, what forms water? And what did this reaction require?

Acid gives OH, alcohol gives H to form water; catalyst required (sulfuric acid)

25

When is soap produced?

when a fat/oil is mixed and heated with a strong alkali (strong base; ex: NaOH)

26

What type of molecule is a fat?

Organic

27

Fats that are esters of glycerol

triglycerides

28

How do micelles clean?

Soap micelles absorb grease molecules into their interiors so that the molecules are suspended in water and can be washed away

29

What is a solid soap?

sodium salt

30

What is a soft soap?

Potassium salt

31

How is detergent different than soap?

Detergent anions form insoluble solids with Ca and Mg, good for cleaning clothes