Advertisements
Advertisements
Question
How the temporary and permanent hardness is removed?
Solution
Temporary hardness can easily be removed by boiling. permanent hardness can be removed by the following methods:-
(i) By the addition of washing soda
(ii) By ion exchange method
(iii) By the use of polyphosphate water softener
APPEARS IN
RELATED QUESTIONS
Consider the reaction of water with F2 and suggest, in terms of oxidation and reduction, which species are oxidized/reduced.
Write chemical reactions to show the amphoteric nature of water.
Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (i) normal water (ii) acidified water, and (iii) alkaline water? Write equations wherever necessary.
Give a balanced equation for the following conversion:
Iron to triiron tetroxide using steam.
How does it occur in the free state and in the combined state.
State a reason to prove that water is a compound and not a element.
The density of water is maximum at ________.
Which one of the following has the highest latent heat of vaporization?
Pure water is ______ and it shows no action towards litmus paper.
Write a short note on the catalytic nature of water.
