0
The presence of these ions in water means the water will have a higher boiling point and a lower freezing point. There are some equations that can tell you exactly how much those points will be changed, but you need to know the quantity of the ions, the formulas of the compounds that produce them, and the volume of the water.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoThese divalent cations make the water "hard" in the special sense that the anions of traditional soaps that are dissolved in the water precipitate, so that more soap is required to achieve a given degree of cleaning than with "soft" water that contains the salts of only monovalent cations along with the water.
Wiki User
∙ 12y agoReferred to as "hard" water
Wiki User
∙ 14y agohardness :)
Add your answer:
Earn +20 pts
What can you find dissolved in large quantities in hard water?
Usually calcium & magnesium ions.
Permanent hardness of water due to?
Calcium, magnesium, iron and manganese ions, the first two are the commonest in household water.
Two elements found in hard water?
Typicall water hardness is caused from calcium and magnesium compounds dissolved in the water. The term "hard water" is used to describe water that has a high mineral content, usually calcium and magnesium in the form of carbonates, but may include several other metals as well as bicarbonates and sulfates, (water with a low mineral content is known as soft water). A high enough concentration of these metals in your water can cause white lime scales on surfaces which the water comes into contact with. Total water 'hardness' is reported as ppm w/v (or mg/L) of calcium carbonate (CaCO3). Water hardness usually measures the total concentration of calcium and magnesium, the two most common metal ions, although in some locations around the world iron, aluminium, and manganese may also be present at elevated levels. Calcium usually enters the water as either calcium carbonate (CaCO3), from limestone or chalk, or from mineral deposits of calcium sulfate (CaSO4).
What other substances cause permanent hardness?
Temporary hardness of water is due to the presence of calcium hydrogentrioxocarbonate(IV) which decompose on heating.when this water is heated calcium trioxocarbonate(iv) is form as insoluble and this brings the ca+ out of the solution as precipitate.once the ca+ re out of the solution soap can now lather well.
Can magnesium carbonate be made as a precipitate by reacting together magnesium sulfate and calcium carbonate?
The proposed method of making magnesium carbonate can not be accomplished from solutions in water, because the solubility of calcium carbonate in water is so low that it can not furnish a sufficient concentration of carbonate ions to exceed the solubility product constant for magnesium carbonate.
Why river waters are generally rich in calcium and magnesium ions?
Calcium and Magnesium ions in river water are result of the reaction from rain water with rocks such as Calcite, Limestone, Dolomite and Gypsum.
What can you find in large quantities in hard water?
Usually calcium & magnesium ions.
What ions are present in hard water if it contains calcium chloride dissolved in distilled water?
ya mamHard water contains calcium and magnesium ions that cause hard water stains and limescale formation.
What can you find dissolved in large quantities in hard water?
Usually calcium & magnesium ions.
What are the two ions that are most commonly responsible for hard water?
calcium and magnesium - but also carbonate if you were to choose a third
Element that is responsible for making water hard?
The metal cations are responsible for making water hard. Examples of these cations includes the calcium ions, the magnesium ions, the aluminum ions, and the manganese ions.
Permanent hardness of water due to?
Calcium, magnesium, iron and manganese ions, the first two are the commonest in household water.
What pair of ions is present in hard water?
Large quantities of calcium and magnesium ions make water hard.
How exactly does a water softener soften my water?
When calcium and magnesium build up in our water, it tends to make the water "hard." A water softener removes the calcium and magnesium and replaces it with sodium, which reduces the waters hardness. Metal ions, such as calcium and magnesium, that build up in water can react with soaps or detergents, creating a hardening effect of the water. This limits the cleaning effect of some soaps and can create build up in pipes. A water softener sends the water through an ionic exchange, where the hardness ions are replaced by sodium ions, reducing the hardness effect.
What elements are found in 'hard water'?
Pure water is composed of two hydrogen molecules and one oxygen molecule, thus the formula H20. Outside of a lab, it is quite unlikely that you will encounter pure water. Dec. 17,2011 Water molecule consists of two hydrogen atoms and one oxygen atom. Hard water is not pure water. It contains ions such as calcium ions and magnesium ions. calcium ions cause permanent hardness whereas, magnesium ions cause temporary hardness. True, outside of a lab, natural water will always contain some chemical species, ions or undissolved microscopic materials that are not visible to the naked eye.
What minerals are in tap water?
Simply just calcium carbonate, iron, magnesium, sodium and other metal ions.
Two elements found in hard water?
Typicall water hardness is caused from calcium and magnesium compounds dissolved in the water. The term "hard water" is used to describe water that has a high mineral content, usually calcium and magnesium in the form of carbonates, but may include several other metals as well as bicarbonates and sulfates, (water with a low mineral content is known as soft water). A high enough concentration of these metals in your water can cause white lime scales on surfaces which the water comes into contact with. Total water 'hardness' is reported as ppm w/v (or mg/L) of calcium carbonate (CaCO3). Water hardness usually measures the total concentration of calcium and magnesium, the two most common metal ions, although in some locations around the world iron, aluminium, and manganese may also be present at elevated levels. Calcium usually enters the water as either calcium carbonate (CaCO3), from limestone or chalk, or from mineral deposits of calcium sulfate (CaSO4).
