Question

criss cross method of following compounds: Hydrochloric Acid, Sulphuric acid, Nitric acid, Ammonium chloride, Potassium Dichromate,Potassium Permanganate.

Answer 1

this may help you. u follow this method to write criss cross method.

Answer 2

Answer: The chemical formula for the given compounds are given below.

Explanation:

Criss cross method of writing the chemical formula for compounds is the exchanging of valencies of the ions which form the subscripts of the formula.

For writing chemical formula of:

1.) Hydrochloric acid:

the valency of hydrogen ion is +1 and that of Chlorine is -1. So, the chemical formula for this compound is HCl.

2.) Sulfuric acid:

The valency of hydrogen ion is +1 and that of sulfate ion is -2. Sulfate ion is a polyatomic ion. So, the chemical formula for this compound is $H_2SO_4$

3.) Nitric acid:

The valency of hydrogen ion is +1 and that of nitrate ion is -1. Nitrate ion is a polyatomic ion. So, the chemical formula for this compound is $HNO_3$

4.) Ammonium chloride:

The valency of ammonium ion is +1 and that of chloride ion is -1. Ammonium ion is a polyatomic ion. So, the chemical formula for this compound is $NH_4Cl$

5.) Potassium dichromate:

The valency of potassium ion is +1 and that of dichromate ion is -2. Dichromate ion is a polyatomic ion. So, the chemical formula for this compound is $K_2Cr_2O_7$

6.) Potassium permanganate:

The valency of potassium ion is +1 and that of permanganate ion is -1. Permanganate ion is a polyatomic ion. So, the chemical formula for this compound is $KMnO_4$

The chemical formula for the given compounds are attached in the image below.