Why dont we use mg and ca for preparing sodium salts??
Answers
Answer:
Hardness in water is caused by the presence of multivalent cations in the water in the form of dissolved salts. Multivalent cations, meaning cations that have oxidation state greater than +1.
As you can see, Sodium (Na+) is incapable of making multivalent cations while Magnesium (Mg2+) and Calcium (Ca2+) exist as multivalent cations.
Now, why does it have to be multivalent cations? Simple, because multivalent cations have the ability to form bonds on two or more sides.
PLZ FOLLOW ME
Explanation:
Answer:
Water is softened on a large scale by the addition of just enough lime to precipitate the calcium as carbonate and the magnesium as hydroxide, whereupon sodium carbonate is added to remove the remaining calcium salts.
Hardness in water is caused by the presence of multivalent cations in the water in the form of dissolved salts. ... The most common problem created by water hardness is that it reacts with soap and turns it into a precipitate like mass. Guess what, soap generally contains Sodium and Potassium ions.