πŸ’¬ Discussion Forum

Hardness

Hardness

by Dr. Nizam Uddin -
Number of replies: 19

Can you remove permanent hardness by boiling?

In reply to Dr. Nizam Uddin

Re: Hardness

by Nadim Mhamud Vorosha -
No, When the soluble salts of magnesium and calcium are present in the form of chlorides and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling.
In reply to Dr. Nizam Uddin

Re: Hardness

by Amzad Husain -
No,
When the soluble salts of magnesium and calcium are present in the form of chlorides and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling.
In reply to Dr. Nizam Uddin

Re: Hardness

by raihan ahmed -
No.Permanently hard water cannot be softened by boiling.
Permanent hardness is caused by very soluble magnesium sulfate (from salt deposits underground) and slightly soluble calcium sulfate (from gypsum deposits).
In reply to Dr. Nizam Uddin

Re: Hardness

by Md zahedul Haque -
no we can't remove the permanent hardness by boiling.
When the soluble salts of magnesium and calcium are present in the form of chlorides and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling.
In reply to Dr. Nizam Uddin

Re: Hardness

by Umma Taiaba -
no . ion exchange resin method can remove permanent hardness.
in this method, the permanent hardness of water is removed by using resins. Ca++/Mg++ ions are exchanged with Cl–, SO4-2 ions are exchanged with anion exchange resin (RNH2OH). Demineralized water is formed in this process.

β‡’ 2RCOOH + Ca++ β†’ (RCOO)2Ca + 2H+

β‡’ RNH2OH + Cl– β†’ RNH2Cl + OH–

β‡’ H+ + OH– β†’ H2O
In reply to Dr. Nizam Uddin

Re: Hardness

by Meharab Mosharrof -
we can't remove the permanent hardness by boiling.
When the soluble salts of magnesium and calcium are present in the form of chlorides and sulfides in water, we call it permanent hardness because this hardness cannot be removed by boiling.
In reply to Dr. Nizam Uddin

Re: Hardness

by dipon kumar Paul -
Permanently hard water cannot be softened by boling.

PermanentΒ  hardnessΒ  is caused by very soluble magnesium sulfate (from salt deposits underground) and slightly soluble calcium sulfate (from gypsum deposits).