Magnesium hydroxide has a Ksp of 2.06 x 10^-13 and calcium Hydroxide has a Ksp o
ID: 1027484 • Letter: M
Question
Magnesium hydroxide has a Ksp of 2.06 x 10^-13 and calcium Hydroxide has a Ksp of 4.68 x 10^-6. What happens when sodium hydroxide is added to Magnesium Nitrate and Calcium Nitrate. 1: the Magnesium precipitates out first and if there is any hydroxide left the calcium will precipitate. 2: The calcium precipitates out first, and if there is any hydroxide left the magnesium will precipitate. 3: The calcium and the magnesium will precipitate out at the same time 4: The hydroxide will disolve both the magnesium and the calcium. I think it is 1?
Explanation / Answer
Ksp is the solubility product constant and it denotes the amount of solubility of a solute in a solvent. Higher Ksp ,eans that the solute is more soluble and hence forms lesser (or no) precipitates. In te given problem, the Ksp of Mg(OH)2 is lesser than that of Ca(OH)2, hence it will form more precipitates (option 1)
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