How will you distinguish :Temporary hard water and permanent hard water?

Question

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Answer 1

Temporary hard water contains carbonates of calcium and magnesium which can easily be emoved by boiling whereas permanent hard water contains sulphates of calcium i.e gypsum so difficult to remove through boiling.

Answer 2

Temporary hard water contains carbonates of calcium and magnesium which can easily be emoved by boiling whereas permanent hard water contains sulphates of calcium i.e gypsum so difficult to remove through boiling.

How will you distinguish :Temporary hard water and permanent hard water?

Temporary hard water contains carbonates of calcium and magnesium which can easily be emoved by boiling whereas permanent hard water contains sulphates of calcium i.e gypsum so difficult to remove through boiling.

What is the permutit method, how can it be used for softening hard water?

Which of the following is not a disadvantage of using hard water?

The following can convert hard water into soft water :

Which of the following will cause softening of hard water?

Calgon is used for removing $$Ca^{2+}$$ and $$Mg^{2+}$$ ions from hard water.

Calgon forms precipitates with $$Ca^{2+}$$ and $$Mg^{2+}.$$

Revise with Concepts

Water - Structure and Physical Properties

Water - Chemical Properties

Hard and Soft Water-Advanced