How are 1Normal HCL,1Molar HCL,1 Molal HCL are prepared ?

Question

Plz tell me how far are the terms related?

Answer 1

(remark that the molecular weight of HCl is 36.5g)

I begin with the easiest

1 Molar is 1 mole by liter of solution so a molar solution of HCl contains 36.5g/L. To prepare, you weight 36.5g of pure HCl and add water until you have a liter

A solution is normal when it contains 1mole/L divided by the valence of the compound. HCl is a bad example since the valence of HCl is 1 So a normal and a molar solution for this compound is the same

1 Molal solution contains 1 mole of HCl by kg of solvent. So, to make a molal solution you must weight 36.5 g of HCL and add one kg of water

Answer 2

To prepare one molar HCl, combine one mole HCl with water to make one liter total. To make one Molal HCl combine one mole HCl with one kg of water. Since HCl has only one H+ atom, 1M is also 1N, since normal concentration refers to hydrogen ion concentration. A 1M solution of H2SO4 would be 2N.

Molar: moles per liter of solution
Molal: moles per kg of sovent
Mormal: molarity of H+ (for acids) or OH- (for bases) ion.

In case you didn't know, one mole = mass in grams equal to the molecular mass number of the material which is 34.6 for HCl