What is the balanced equation for the reaction of magnesium and water?

The thermodynamically favored reaction between water and magnesium, Mg + 2H2O → Mg(OH)2 + H2, is normally sluggish, but it becomes reasonably rapid when a milled composite of powdered magnesium metal and powdered iron (1−10 mol \%) is used with sodium chloride solutions.

What is the chemical formula of hard water?

2 C17H35COO− (aq) + Ca2+ (aq) → (C17H35COO)2Ca (s) Hardness can thus be defined as the soap-consuming capacity of a water sample, or the capacity of precipitation of soap as a characteristic property of water that prevents the lathering of soap.

What is MgSO4 6H2O?

Magnesium sulfate hexahydrate. 17830-18-1. magnesium;sulfate;hexahydrate. Mg.SO4.6H2O. magnesium sulphate hexahydrate.

What is the formation reaction for MgSO4 s?

Magnesium sulfate, MgSO4, is a colourless crystalline substance formed by the reaction of magnesium hydroxide with sulfur dioxide and air. A hydrate form of magnesium sulfate called kieserite, MgSO4∙H2O, occurs as a mineral deposit.

How do you write a balanced chemical equation for a reaction?

Balanced chemical equation – A chemical equation in which the number of each type of atom is equal on the two sides of the equation. Subscripts – Part of the chemical formulas of the reactants and products that indicate the number of atoms of the preceding element.

What is the chemical formula for magnesium?

Mg+2
Magnesium ion | Mg+2 – PubChem.

What is permanent hardness of water?

Permanent hardness is hardness (mineral content) that cannot be removed by boiling. When this is the case, it is usually caused by the presence of calcium sulfate and/or magnesium sulfates in the water, which do not precipitate out as the temperature increases.

How do you calculate the hardness of water?

The amount of hardness is expressed in milligrams per litre (mg/L) or grains per gallon (gpg) as calcium carbonate. Hardness is calculated from the equation Hardness = 2.497 (Ca) + 4.118 (Mg).

What is the formula for magnesium sulfate trihydrate?

H6MgO7S
Magnesium sulfate trihydrate

What is the permanent hardness of water?

Water is permanently hard when calcium (Ca 2+), magnesium (Mg 2+), and sulfate (SO 42-) ions are present in it. These ions are generated when calcium sulfate (CaSO 4) and magnesium sulfate (MgSO 4) dissolve in water. How is permanent hardness removed?

Why is water hard when calcium sulfate is present in it?

Water is permanently hard when calcium (Ca 2+ ), magnesium (Mg 2+ ), and sulfate (SO 42-) ions are present in it. These ions are generated when calcium sulfate (CaSO 4) and magnesium sulfate (MgSO 4) dissolve in water.

Why are calcium and magnesium ions removed from hard water?

These ions do not pose any health threat, but they can engage in reactions that leave insoluble mineral deposits. These deposits can make hard water unsuitable for many uses, and so a variety of means have been developed to “soften” hard water; i.e., remove the calcium and magnesium ions.

How do you remove the permanent hardness of water by GAN method?

Gan’s Permutit Method: In this method, sodium aluminum ortho silicate known as permutit or zeolite is used to remove the permanent hardness of water. Reaction: Na 2 Al 2 Si 2 O8.KH 2 O + Ca ++ → 2Na + + Ca Al 2 Si 2 O8.xH 2 O