ACIDIMETRY

Question 1

Is the analysis of a base using an
accurately measured volume of standard acid
solution

Answer 1

Acidimetry

Question 2

if using an accurately measured volume of a standard acid solution

Answer 2

DIRECT

Question 3

If the process requires adding an excess
of the standard acid solution and determining the
amount in excess by residual titration with
standard alkali solution

Answer 3

RESIDUAL

Question 4

What kind of assay is Assay of Sodium Bicarbonate

Answer 4

DIRECT ACIDIMETRIC ASSAY

Question 5

Assay of Sodium Bicarbonate

Answer 5

1. 3 g of NaHCO3 dissolved in 25 ml of water
2. Add the indicator
3. Titrate with 1 N Sulfuric
   acid

Question 6

mEq of NaHCO3

Answer 6

0.084

Question 7

What kind of assay is Assay of Zinc Oxide

Answer 7

RESIDUAL ACIDIMETRIC ASSAY

Question 8

Assay of Zinc Oxide

Answer 8

1. accurately weighed sample of zinc oxide
2. add ammonium chloride
3. dissolved in 50 mL of 1-N sulfuric acid
4. Indicator is added
5. excess acid is titrated with sodium hydroxide until the endpoint is reached.
6. Calculate the
   percentage
   purity of zinc
   oxide.

Question 9

mEq of ZnO

Answer 9

0.0407

Question 10

VS for Aqueous Acidimetry

Answer 10

HCL & H2SO4

Question 11

PRIMARY STANDARD for Aqueous Acidimetry

Answer 11

SODIUM CARBONATE

Question 12

SECONDARY STANDARD for Aqueous Acidimetry

Answer 12

SODIUM HYDROXIDE

Question 13

DIRECT for Aqueous Acidimetry

Answer 13

NaOH, NaHCO3, Na Salicylate

Question 14

RESIDUAL for Aqueous Acidimetry

Answer 14

NH4Cl, METHENAMINE, ZnO, POTASSIUM SODIUM TARTRATE, TARTRATE

Question 15

VS for Non- Aqueous Acidimetry

Answer 15

Perchloric acid in glacial acetic acid & Perchloric acid, HBr

Question 16

PRIMARY STANDARD AND SECONDARY STANDARD for Non- Aqueous Acidimetry

Answer 16

POTASSIUM BIPHTHALATE

Question 17

DIRECT/RESIDUAL for Non- Aqueous Acidimetry

Answer 17

METHACOLINE CL

Question 18

mEq of Na2CO3

Answer 18

0.053

Question 19

mEq of ZnO

Answer 19

0.037

Question 20

mEq of SODIUM BORATE H3BO3

Answer 20

0.1907

Question 21

A method designed to determine and quantify
ammonia in ammonium sulfate obtained by
decomposing organic substance with sulfuric acid

Answer 21

KJELDAHL Method
Nitrogen determination

Question 22

serve as
catalysts FOR KJELDAHL METHOD

Answer 22

K2SO4, anhy Na2SO4, CuSO4, Se

Question 23

if N is as NO3, ______ is added

Answer 23

salicylic acid

Question 24

Phases in Kjeldahl Method

Answer 24

1.In order to convert the amine nitrogen in the sample to
ammonium ions, it is first digested in powerful sulfuric acid with
the assistance of a catalyst.
2.After being heated and distilled, the ammonium ions are
changed into ammonia gas. The ammonia gas is introduced into a
solution for trapping where it dissolves and reverts to an
ammonium ion,
3.Finally, a computation is conducted after titrating with a
standard solution to establish how much ammonia has been
trapped.

Question 25

Advantages of Kjeldahl
Method

Answer 25

1.The Kjeldahl method continues to be the
gold standard for comparison with all other
procedures and is widely applied
internationally.
2.It has become a key method for estimating
the amount of protein in foods due to its
universality, high precision, and good
reproducibility

Question 26

Limitations of Kjeldahl
Method

Answer 26

Kjeldahl method is not appropriate for
compounds with nitrogen in azo and nitro
groups or in rings (quinoline, pyridine, etc.)
because the Kjeldahl process cannot be
used in these situations to turn the
nitrogen into ammonium sulphate.

Question 27

The total nitrogen present in organic substances
is widely renowned as

Answer 27

total Kjeldahl nitrogen

Question 28

It is majorly utilized in sewage treatment plants,
treat ment of industrial effluent as it is considered
as an useful tool in the chemical analysis of soil
water or wastewater.

Answer 28

Total Kjeldahl Nitrogen

Question 29

This method is well accepted globally for its
accuracy, versatility and efficient strategy.

Answer 29

Total Kjeldahl Nitrogen