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IGCSE test for anions

Total questions: 7

Worksheet time: 5mins

Name
Class
Date
1.

Choose a test and a result for carbonate (CO32-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

2.

Choose a test and a result for chloride (Cl-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

3.

Choose a test and a result for bromide (Br-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

4.

Choose a test and a result for iodide (I-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

5.

Choose a test and a result for nitrate (NO3-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

6.

Choose a test and a result for sulfate (SO42-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)  

7.

Choose a test and a result for sulfite (SO32-)

ans format : test, result


Test:

A : add dilute acid

B : acidify with dilute nitric acid, then add aqueous silver nitrate

C : add aqueous sodium hydroxide, then aluminium foil; warm carefully

D : acidify, then add aqueous barium nitrate

E : add dilute hydrochloric acid, warm gently and test for the presence of sulfur dioxide


Results:

F : effervescence, carbon dioxide produced

G : white ppt

H : cream ppt

I : yellow ppt

J : ammonia produced

K : sulfur dioxide produced will turn acidified aqueous potassium manganate(VII) from purple to colourless

(a)