What is the difference between permanent and temporary hardness of water?

Temporary hardness is mainly caused by the carbonates and bicarbonates of calcium and magnesium. It can be easily removed by boiling of water. Permanent hardness is due to presence of sulfates and chlorides of calcium and magnesium in water.

How is temporary and permanent hardness of water determined?

Temporary hardness = Mg(HCO3)2 = 11.50mgs/Lit. Permanent hardness = MgCl2 + MgSO4 = 12.63 + 24.66 = 37.29mgs/Lit.

What causes the temporary and permanent hardness of water class 11?

Temporary hardness of water is caused when thermally unstable chemicals like magnesium hydrogen carbonate and calcium hydrogen carbonate are dissolved in water. Permanent hardness of water is caused when chlorides and sulfides of calcium and magnesium are dissolved in water.

What is the difference between permanent and temporary?

What is the difference between a permanent and a temporary position? A permanent position is one where there is no defined employment end date and the employee receives a benefits package. A temporary position is one that has a defined duration of employment with a contract end date.

What do mean by temporary hardness and permanent hardness of water explain one method each for removing temporary hardness and permanent hardness of water?

The presence of magnesium and calcium carbonates in water makes it temporarily hard. In this case, the hardness in water can be removed by boiling the water. When we boil water the soluble salts of Mg(HCO3)2 is converted to Mg(OH)2 which is insoluble and hence gets precipitated and is removed.

What is temporary hardness and permanent hardness?

Temporary hardness is a type of water hardness caused by the presence of dissolved bicarbonate minerals (calcium bicarbonate and magnesium bicarbonate). Permanent hardness is hardness (mineral content) that cannot be removed by boiling.

How do you determine permanent hardness of water?

Permanent Hardness of Water: When the soluble salts of magnesium and calcium are present in the form of chlorides and sulphides in water, we call it permanent hardness because this hardness cannot be removed by boiling. We can remove this hardness by treating the water with washing soda.

What is cause of temporary hardness and permanent hardness?

Temporary hardness of water is due to the presence of soluble salts of magnesium and calcium in the form of hydrogen carbonates (MHCO3, where M = Mg, Ca) in water. Permanent hardness of water is because of the presence of soluble salts of calcium and magnesium in the form of chlorides in water.

What is the difference between temporary and temporarily?

Temporary is an adjective. Temporarily is an adverb. E.g. We will be moving into the adjoining office for the the next three weeks; this is a temporary measure whilst our office is refurbished.

What is the difference between permanent and temporary employees?

Unlike temporary workers, independent contractors usually do not fill out timesheets and are paid for the work they do, not the time they work. That means they are responsible for delivering a product or service by a specific deadline and shouldn’t be paid any extra no matter how many hours they spend working on it.