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One factor is that barium is a much larger atom and ion than magnesium. So the bond between barium and the hydroxide anion is much weaker, making it easier for the two ions to be pulled apart in water solution.

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Q: Why does barium hydroxide dissolve in water while magnesium hydroxide does not?
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Related questions

Is magnesium hydroxide stronger than barium hydroxide?

No, each soluble hydroxide (sodium, potassium, magnesium, calcium, barium etc.) are as strong as all of the SAME kind of hydroxide anions (OH-).Only the solubility differences determine the concentration of OH- ions, but their 'strength' is ALL the SAME.Really hydroxide is the strongest base in water solution.Sodium, potassium, magnesium, calcium and barium hydroxides are actually (basic) SALTS of the same hydroxide anions! The cations are all neutral in water.


Is Barium hydroxide insoluble in water?

No. Barium hydroxide dissolves in water.


Will a strong alkali dissolve in water?

All types of strong alkali do not dissolve well in water. Magnesium hydroxide can be given as an example for an insoluble strong alkali.


Difference between magnesium oxide and magnesium hydroxide?

Magnesium oxide will react with water to form Magnesium Hydroxide. Magnesium Hydroxide will not reat further with water


Does magnesium hydroxide dissolve in water?

Magnesium oxide does not "dissolve" in hydrochloric acid. Dissolution is a physical change. When magnesium oxide is mixed with hydrochloric acid, a chemical reaction takes place: Mg(s) + 2HCl ---> MgCl2(aq) + H2(g)


Common name for magnesium hydroxide?

Magnesium hydroxide is an inorganic compound with the chemical formula Mg(OH)2. As a suspension in water, it may be referred to as Milk of Magnesia. The solid mineral form of magnesium hydroxide is known as brucite.Magnesium hydroxide is common component of antacids and laxatives. Magnesium hydroxide interferes with the absorption of folic acid and iron.Magnesium hydroxide is not very soluble in water, with a Ksp of 1.5x10-11. While the solubility of magnesium hydroxide is low, all of the magnesium hydroxide that does dissolve in the water does dissociate. Since the dissociation of this small amount of dissolved magnesium hydroxide is complete, magnesium hydroxide is considered a strong base.


What is Ba(OH)2?

Ba(OH)2 is the chemical formula barium hydroxide.


What is the name for Mg OH 2?

Magnesium hydroxide. Most people are familiar with it when it is suspended in water to make Milk of Magnesia.


What happens to barium in water?

Ba + 2 H2O --> Ba(OH)2 + H2 Barium + Water --> Barium Hydroxide + Hydrogen Gas.


What is the formula for barium ion and hydroxide ion?

Barium ion = Ba2+ Hydroxide ion = OH- The compound they make is Barium hydroxide = Ba(OH)2which is a precipitate insoluble in water.


Is Ba(OH)2 salt acid or base?

Barium hydroxide, Ba(OH)2, is a base.


Is this equation correct Magnesium Hydroxide heat up will give Magnesium Phosphate plus water?

No - phosphorous can not just appear.Heating magnesium hydroxide will give magnesium oxide and water.