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Qualitative Analysis- Cations

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Which cation gives a lilac flame colour?

a)

K+

b)

Na+

c)

Ca+2

d)

Cu+2

e)

Fe+2

2.

Which cation gives a golden yellow flame colour?

a)

K+

b)

Na+

c)

Ca+2

d)

Cu+2

e)

Fe+2

3.

Which cation gives no flame colour?

a)

K+

b)

Na+

c)

Ca+2

d)

Mg+2

e)

Fe+2

4.

Which cation gives a green precipitate with NaOH?

a)

Fe+2

b)

Al+3

c)

Ca+2

d)

Cu+2

e)

Fe+3

5.

Which cation gives a brick red precipitate with NaOH?

a)

Fe+2

b)

Al+3

c)

Ca+2

d)

Cu+2

e)

Fe+3

6.

Which cation gives a blue precipitate with NaOH?

a)

Fe+2

b)

Al+3

c)

Ca+2

d)

Cu+2

e)

Fe+3

7.

Which cation gives an insoluble white precipitate with NaOH and gives a brick red flame?

a)

Fe+2

b)

Al+3

c)

Ca+2

d)

Cu+2

e)

Fe+3

8.

Which cation gives a soluble white precipitate with excess NH4OH?

a)

Ca+2

b)

Al+3

c)

Zn+2

d)

Mg+2

e)

Pb+2

9.

Which cation gives an insoluble white precipitate with excess NaOH and no precipitate with sulfuric acid?

a)

Ca+2

b)

Al+3

c)

Zn+2

d)

Mg+2

e)

Pb+2

10.

Which cation gives an bright yellow precipitate with KI?

a)

Ca+2

b)

Al+3

c)

Zn+2

d)

Na+1

e)

Pb+2