Question

The symbols of some positive and negative ions are given in the table. Analyse the
table and find the chemical formaulae of the salts given

Name of positive ions and symbols

Potassium ion
K+
Sodium ion
Na +
Calcium ion
Ca2+
Ammonium ion
NH4+

Name of negative ions and symbols

Hydroxide ion
OH-
Carbonate ion
CO3 2-
Nitrate ion
NO3-
Sulphate ion
SO2 4-

(i) Potassium nitrate

(ii) Calcium hydroxide

(iii) Ammonium sulphate​

Answer 1

Answer:

1) Calcium chloride CaCl

2

?

2) Calcium sulphate CaSO

4

3) Calcium phosphate Ca

3

(PO

4

)

2

4) Ammonium chloride NH

4

Cl

5) Ammonium sulphate (NH

4

)

2

SO

4

6) Ammonium phosphate (NH

4

)

3

PO

4

.