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The permanent hardness of water is caused by dissolved doubly or triply charged metal cations, which must be removed to remove the permanent hardness. Distillation is a traditional method for removing these and all other ions, but a more economical solution under most circumstances is contacting the water with an ion exchange medium that can replace the doubly or triply charged cations with singly charged cations such as those of sodium and/or potassium. The reason this works is that most doubly or triply charged cations form precipitates with the anionic portion of soaps or anionic detergents, but singly charged cations form more soluble salts that do not precipitate.
What else can I help you with?
What method remove both temporary and permanent hardness of water?
Boiling method
Wat salt is responsible for temporary and permanent hardness of water?
Temporary hardness of water: CaHCO3, MgHCO3 Permanent hardness of water: CaSO4, MgSO4
What other substance cause by permanent hardness?
Permanent hardness in water is hardness due to the presence of the chlorides, nitrates and sulphates of calcium and magnesium, which will not be precipitated by boiling.
How do you get rid of water hardness?
Salt is sometimes used to remove water hardness. Borax and soda are generally used as well to remove water hardness.
What causes permanent hardness of water?
Permanent hardness of water is caused by the presence of dissolved calcium sulfate and magnesium sulfate, which cannot be removed through boiling. These minerals form insoluble compounds that remain in the water even after treatment, leading to permanent hardness.
What is the difference between temp hard water and permanent hard water?
here two type of hardness 1-temporery 2-permanent *temporery hardness-it is also known as carbonate hardness and alkiliny hardness.it is unstable hardness.it is remove by boiling.it is the due presence of carbonate.
What are the two form of hardness found in water?
Hardness in water is usually characterised as temporary or permanent. Both are due to the presence of calcium or magnesium ions. If they are present as the hydrogen carbonate, when the water is boiled this is converted to the carbonate which precipitates out as a solid, leaving water which is no longer hard, so this is called temporary hardness. If they are present as the sulfate the solution is unaffected by boiling, and this is called permanent hardness.
How hardness of water can be remove?
Hardness of water can be removed with a water softener. These devices pump the water through salt to remove minerals and other particles.
What salts can cause hardness of water?
calcium and magnesium
How do you remove the hardness of water?
Boiling water is simple process as it remove all temporary hardness.Permanent hardness need specific filters.
How do you remove hardness of water?
Boiling water is simple process as it remove all temporary hardness.Permanent hardness need specific filters.
What are the methods used to remove permanent hardness of water?
The common methods used to remove permanent hardness of water are ion exchange, lime-soda treatment, and distillation. Ion exchange involves passing hard water through resin beads that exchange calcium and magnesium ions with sodium ions. Lime-soda treatment involves adding lime (calcium hydroxide) and soda ash (sodium carbonate) to precipitate out the calcium and magnesium ions. Distillation involves boiling water to separate it from the minerals causing hardness.
