Neutralization

Question 1

Chemical Reaction in which an ACID/PROTON DONOR reacts with a BASE / PROTON ACCEPTOR

Answer 1

Neutralization

Question 2

Neutralization Reaction Products

Answer 2

Salt, Water

Question 3

Theories explaining color change of indicators

Answer 3

Physicochemical Theory
Organic Theory
Colloidal Theory

Question 4

Attributes the color to certains ions

Answer 4

Physichochemical Theory

Question 5

_____ in which causes the appearance of a new color
______ in which causes the disappearance of a color or the appearance of different color

Answer 5

Increase
Decrease

Question 6

Attributes the color of indicators to certain groupings of the elements in a compound

Answer 6

Organic Theory

Question 7

Assuemes that indicators form colloidal solutions

Answer 7

Colloidal Theory

Question 8

How many drops of indicator should be used for a titration

Answer 8

3

Question 9

Strong Acid + Strong Base

Answer 9

Methyl Red
Methyl Orange
Phenolphthalein

Question 10

Weak Acid + Strong Base

Answer 10

Phenolphthalein

Question 11

Weak alkali + Strong acid

Answer 11

Methyl Red

Question 12

Weak Acid + Weak Base

Answer 12

Never titrate - no indicator will give a sharp endpoint

Question 13

Methyl yellow

Answer 13

Acid: Red
Base: Yellow

Question 14

Methyl orange

Answer 14

Acid: Pink
Base: Yellow

Question 15

Methyl Red

Answer 15

Acid: Red
Base: Yellow

Question 16

Bromophenol Blue

Answer 16

Acid: Yellow
Base: Blue

Question 17

Bromocresol Purple

Answer 17

Acid: Yellow
Base: Purple

Question 18

Bromothymol Blue

Answer 18

Acid: Yellow
Base: Blue

Question 19

Phenolphthalein

Answer 19

Acid: Colorless
Base: Red

Question 20

Bromothymol Green

Answer 20

Acid: Yellow
Base: Blue

Question 21

Used to sharpen up the color change

Answer 21

Mixed indicators

Question 22

Acidimetry

Answer 22

Titration of base with a standard ACID
Analysis of Bases

Question 23

Aqueous Acidemetry

Question 23

VS in Acidimetry

Answer 23

Aqueous: HCl, H2SO4
Non-Aq: Perchloric Acid in glacial acetic acid, HBr

Question 24

Primary Std in Acidimetry

Answer 24

Aqueous: Anhydrous sodium carbonate Non-Aq: Potassium biphthalate

Question 25

Secondart Std in Acidimetry

Answer 25

Aqueous: NaOH Non-Aq: -

Question 26

Direct Titration in Acidimetry

Answer 26

Aqueous: NaOH, KOH, Na2CO3, NaHCO3 Non-Aq: Metacholine chloride

Question 27

Residual titration Acidimetry

Answer 27

Aqueous: ZnO, Na K tartrate, Milk of Magnesia, Methenamine Non-Aq: -

Question 28

Indicators in Acidimetry

Answer 28

Aqueous: Methyl Red, methyl Orange, Phenolphthalein Non-Aq: Weak Bases: Crystal Violet, Malachite Green, Methylrosaniline chloride, Quinaldine Red, a-naphthol benzene Strong Base: Methyl Red, Methyl Orange, Thymol Blue

Question 29

Non-aq Weakly basic substances

Answer 29

Amine Amine salts Heterocyclic hetero compouns Alkali Sa;ts of organic acids Alkali salts of weak inorganic acids Amino acids

Question 30

Assay of Nitrogen Content

Answer 30

Kjeldahl Method

Question 31

Done if the ammonia is not quantitatively liberated from an organic nitrogen containing compound by acid or alkaline hydrolysis

Answer 31

Kjeldahl Method, Assay of Nitrogen Content

Question 32

Methods to reduce time of Digestion of Nitrogen

Answer 32

Addition of Potassium SO4 or anhydrous sodium sulfate Addition of catalyst (Copper sulfate or Selenium)

Question 33

Kjeldahl Methods

Answer 33

Method I - Macromethod Method II - Semimicromethod

Question 34

Ammonia is distilled into excess boric acid solution using 500 ml jheldahl flask

Answer 34

Method I - Macromethod

Question 35

Nitrates and Nitrites Absent

Answer 35

1g of substance

Question 36

Smaller samples employed using a semimicro kjeldahl appratus with 600 ml flask

Answer 36

2 - 3mg nitrogen

Question 37

Alkalimetry

Answer 37

Titration of acids with a standard base Analysis of Base

Question 38

VS in Alkalimetry

Answer 38

Aqueous: NaOH, KOH (must be protected from CO2) Non-Aq: Na methoxide, Li methoxide

Question 39

Primary Std in Alkalimetry

Answer 39

Aqueous: K biphthalate Non-Aq: Benzoic Acid in dimethylformamide

Question 40

Secondary Std in Alkalimetry

Answer 40

Aqueous: HCl, H2SO4 Non-Aq: -

Question 41

Direct Titration Alkalimetry

Answer 41

Aqueous: HCl Dil. H3PO4 tartaric Acid Boric Acid Citric Acid Non-Aq: Phenytoin Barbiturates

Question 42

Residual Titration in Alkalimetry

Answer 42

Aqueous: Esters Parabens Acid anhydride Acid chlorides Aldehydes Aspirin Chloral hydrate Formaldehyde

Question 43

Indicator in Alkalimetry

Answer 43

Aqueous: Methy Red Phenolphthalein Methyl orange Non-Aq: Weak Acid: O-nitroaniline Weak to Intermediate: Azo-violet Intermediate: Thymol Blue Strong: EDTA

Question 44

Non-aqueous Titration: Weakly acidic drug

Answer 44

Acid halides Anhydride Amino acids Enold