Question

1.) Soap forms a precipitate in hard water. Give the scientific reason for this.

2.) What is the chemical formula for:

a.) baking soda
b.) washing soda
c.) bleaching powder
d.) common salt

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Answer 1

Explanation:

1. Soap does not work properly in hard water. This is primarily because hard water contains salts of calcium and magnesium. When soap is added to hard water, it reacts with these salts to form an insoluble precipitate called scum. This scum sticks to the cloth and decreases the cleansing ability of the soap.

• NaHCO
• So for now, the formula of washing soda is Na2Co3 10H2o. Now let's see how to make it. So technically speaking if you have sodium carbonate or Na2Co3 and you add 10 molecules of H2o to it so you should get your washing soda.
• Ca(ClO)₂
• NaCl

I hope that will be help you

Answer 2

Bas Bas Boht Ho Gya Rehne Do Aab...Ruk.Jao abb