Advertisements
Advertisements
Question
How the temporary and permanent hardness is removed?
Advertisements
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
What do you understand by the term ’auto-protolysis’ of water? What is its significance?
Complete the following chemical reaction.
\[\ce{PbS_{(s)} + H_2O_{2(aq)} ->}\] ______
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Complete the following chemical reaction.
\[\ce{MnO^-_{4(aq)} + H_2O_{(g)} ->}\]
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Complete the following chemical reaction.
\[\ce{AlCl_{3(g)} + H_2O_{(l)} ->}\] ?
Classify the chemical reaction into (a) hydrolysis, (b) redox and (c) hydration reactions.
Why is water used in hot-water bottles?
State a reason to prove that water is a compound and not a element.
Why is fused calcium chloride and not potassium chloride kept in a desiccator?
How can production of hydrogen from water gas be increased by using water gas shift reaction?
Which one of the following has the highest latent heat of vaporization?
Write the chemical equation for the production of water when zinc reacts with sulphuric acid.
