PRELIM LEC

Question 1

chemical process in which an acid reacts with a base

Answer 1

Neutralozation reactions

Question 2

_____ ANY SUBSTANCE WHICH IS CAPABLE OF PROVIDING HYDROGEN IONS(PROTONS H^+) in aqueous soln.
_____ ANY SUBSTANCE CONTAINING HYDROXY GROUPS AND CAPABLE OF PROVIDING HYDROXIDE IONS IN AQUEOUS SOLN.
what concept is this?

Answer 2

acid
base
Arrhenius concept

Question 3

____any substance capable of donatinhg a proton H+ in a chem rxn
____ any substance capable of accepting a proton H+ in a chem reaction
What concept

Answer 3

acid
base
Bronsted-Lowry concept

Question 4

___Any substance which can accept a share in a pair of electrons in a reaction ELECTRON ACCEPTOR (ELECTROPHILIC)
____ Any substance that donates a pair of electrons to share with an acid in a rxn ELECTRON DONOR(NUCLEOPHILIC)
WHAT CONCEPT?

Answer 4

Lewis acid base concept

Question 5

in this method, an accurately weighed sample of a pure acid or base is titrated to a well defined equivalence point using a known concentration of an acid or base using suitable indicator

Answer 5

Neutralization titration

Question 6

acid:yellow base: green

Answer 6

malachite green

Question 7

acid: red base: yellow

Answer 7

Methyl yellow

Question 8

acid: yellow base: blue

Answer 8

Bromophenol blue

Question 9

acid: pink base: yellow

Answer 9

methyl orange

Question 10

acid: yellow base: blue

Answer 10

Bromecresol green

Question 11

acid: red base: yellow

Answer 11

Methyl red

Question 12

acid: yellow base: purple

Answer 12

Bromecresol purple

Question 13

acid: yellow base: blue
aside bromecresol green and bromophenol blue

Answer 13

Bromothymol blue

Question 14

acid yellow base red

Answer 14

phenol red

Question 15

aside phenol red
ACID YELLOW BASE RED

Answer 15

CRESOL RED

Question 16

ACID YELLOW BASE BLUE ASIDE THE 3 BROMEC

Answer 16

thymol blue

Question 17

acid colorless base red

Answer 17

phenolphthalein

Question 18

acid colorless base blue

Answer 18

Thymolphthalein

Question 19

used to sharpen up the color change

Answer 19

Mixed indicators

Question 20

have both acidic and basic properties eg. water, ethanol, methanol

Answer 20

Amphiprotic

Question 21

neither acidic nor basic (inert solvent) benzene and carbon tetrachloride

Answer 21

aprotic

Question 22

not acidic, most are extremely weak bases (nonionizable) ether dioxane

Answer 22

BAsic

Question 23

does not posses ther acidic or basic properties, weaker acids and based can be titrated in them

Answer 23

inert solvents

Question 24

very weak proton acceptor
does not compete effectively with weak bases for protons
protonated only by very strong acids

Answer 24

acetic acid

Question 25

strongest of the common acids in acetic acid soln

Answer 25

Perchloric acid

Question 26

added to remove water from aqueous perchloric acid weak bases compete very effectively w/ acetic acic for protons

Answer 26

acetic anhydride

Question 27

titration medium commonly used in nonaqueous titration

Answer 27

perchloric acid in acetic acid

Question 28

very weak bases are used, oracet blue, quinalidine red,etc

Answer 28

indicators

Question 29

corrects for any moisture in the glacial acetic acid that reacts with the perchloric acid

Answer 29

blanl determination

Question 30

alcohol or an aprotic solvent, ethylenediamine

Answer 30

solvent