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Presence of bicarbonates of chlorides or sulphates of calcium or magnesium in water are the main causes of hardness of water.

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10y ago
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2w ago

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.

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12y ago

The permanent hardness of water is due to the presence of calcium and magnesium sulfates&chlorides.

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13y ago

It is caused by Calcium Hydrogen Carbonate :)

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Q: What causes permanent hardness of water?
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Wat salt is responsible for temporary and permanent hardness of water?

Temporary hardness of water: CaHCO3, MgHCO3 Permanent hardness of water: CaSO4, MgSO4


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.


Permanent hardness of water due to?

Permanent hardness of water is typically caused by the presence of calcium sulfate (CaSO4) and magnesium sulfate (MgSO4) in the water. These minerals do not precipitate out of solution when water is boiled, unlike temporary hardness caused by calcium bicarbonate which can be easily removed by boiling. Permanent hardness can be removed through processes like ion exchange or chemical precipitation.


What are the types of hard 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 is potassium palmitate used in the determination of water hardness?

Sodium palmitate produce a permanent lather with hard water..

Related questions

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.


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.


Why temporary hardness is removed from water by boiling but permanent hardness is not?

Permanent hardness is hardness (mineral content) that cannot be removed by boiling. It is usually caused by the presence in the water of calcium and magnesium sulphates or chlorides which become more soluble as the temperature rises.


What salts can cause hardness of water?

calcium and magnesium


How can you destroy permanent hardness of water due to sulphates of metals?

zeolites


Do Calcium bicarbonate salts cause hardness to the water?

Yes. it causes temporary hardness of water, which can be generally removed by boiling water.


What method remove both temporary and permanent hardness of water?

Boiling method


What is the difference between temp hard water and permanent hard water?

Temporary hard water contains bicarbonates that can be removed by boiling, while permanent hard water contains sulfates or chlorides that cannot be removed by boiling. Temporary hardness can be easily treated with boiling or using a water softener, while permanent hardness requires more advanced treatment methods such as ion exchange or reverse osmosis.


What are the types of hard 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 is potassium palmitate used in the determination of water hardness?

Sodium palmitate produce a permanent lather with hard water..


Was the hardness of water increased or decreased by boiling?

1. Only the temporary hardness of water (caused by bicarbonates) is decreased by boiling: bicarbonates were transformed in insoluble carbonates and these compounds become a precipitate. 2. The permanent hardness is not influenced by temperature.