Question

WM "Please write the molecular formula for the following by criss cross method. 1. Calcium nitrate 2. Sodium bicarbonate 3. Magnesium nitrite 4. Sodium chloride 5. Hydrogen sulphate 6. Hydrogen chloride T-Aluminium bisulphate 8 Aluminium chloride 9. Aluminium sulphate 10. Hydrogen Nitrate​

Answer 1

1 Ca(NO3)2

Calcium- Ca, Valency 2

Nitrate- NO3, Valency 1

AFTER CRISS CROSS:

Ca1(NO3)2

Ca(NO3)2

2 sodium bicarbonate = NaHCO3

Na = Sodium = (Na)+

HCO3 = bicarbonate = (HCO3) -

Na HCO3

3 magnesium nitrite

+2 _ 1

Mg2(NO3)2

4 Na Cl

+1 _1

formula NaCl

5 hydrogen sulphide

H SO4

+1 _2

formula H2SO4

6 H Cl

+1 _1

HCl

7 AL2 HSO4

+2 -2

AL2(HSO4)3

8 NH4 Cl

+1 _1

NH4Cl

9 NH4 SO4

+1 _2

(NH3)2SO4

10 H NO3

+1 _1

HNO3