Qualitative Analysis of Anions (Experiment 3)

Question 1

In qualitative analysis of an unknown solution, it is important to answer the question,

Answer 1

What is present?

Question 2

The previous experiment deals with the ______ and compared to this, the __________ in a solution is quite _______.

Answer 2

Analysis of Cation
Analysis of Anion
Indirect

Question 3

It involves 1 to 2 stages of ______ then _______ test to check the ________

Answer 3

Separation,
Confirmatory
Anion’s Identity

Question 4

What Group? and There is a visible change( such as gas evolution and formation of precipitate) with dilute ________________________

Answer 4

Group 1:

Question 5

Group 1

Answer 5

Group 1 Co3(2-), SiO3(2), S2-, SO3(2-), S2O3(2-)

Question 6

Group 2

Answer 6

SO4(2-), PO4(3-), F-, BO3(3-)

Question 7

What Group?
Form precipitates with __________ in neutral solutions

Answer 7

Group 2
Barium Ions acidic

Question 8

Group 3

Answer 8

Group 3Cl-, Br-, I-, SCN-

Question 9

Form precipitates inwith ______________________ environment

Answer 9

silver ions acidic

Question 10

Group 4

Answer 10

NO2-, NO3-, CO3 2-, ClO3-

Question 11

Do not react with any ________________ and/or _____ mentioned above.

Answer 11

Reagents; Ions

Question 12

Experiment 3:

Test Solutions:

Answer 12

0.05M Sodium Chloride, NaCl
0.05M Sodium Carbonate, Na2CO3
0.05M Sodium Sulphate, Na2SO4
0.05M Sodium Nitrate, NaNO3

Question 13

Reagents:

Answer 13

0.1M Silver Nitrate, AgNO3
6M Acetic Acid, CH3COOH
6M Hydrochloric Acid, HCl
0.1M Barium Chloride, BaCl2
Sat. Barium Hydroxide, Ba(OH)2
6M Ammonia, NH3
6M Sodium Hydroxide, NaOH
Unknown Solution

Question 14

Others:

Answer 14

Litmus Paper

Question 15

Instrument:

Answer 15

Centrifuge and Water Bath

Question 16

PROCEDURE:

Answer 16

• Separation and Confirmation of Chloride (Cl-)
• Confirmation of Carbonate (CO3(2-)
• Confirmation of Sulfate (SO4(2-)
• Confirmation of Nitrate (NO3-)