Magnesium fluoride, solubility product

Calcium fluoride has a lower solubility than magnesium fluoride. Eventual production of Cap2 is important in the fluoridation of water. 

Interpret Data What compound would precipitate first if a 0.500M sodium fluoride solution were added gradually to a solution already containing 0.500M concentrations of both barium ions and magnesium ions Use the data in Table 17.6. Write the solubility equilibrium equations and solubility product constant expressions for both compounds. Explain your answer. 

Therefore, the solubility product is exceeded and magnesium fluoride precipitates. 

This is well below the solubility product and so the magnesium fluoride will not precipitate out. 

A student measures the molar solubility of magnesium fluoride in a water solution to be 1.19 X 10 M. Based on her data, what is the solubility product constant for this compound ... 

The likely mechanism of the inhibitive effect of KF on AM-SCl is similar to that for pure magnesium and AZ91D in a fluoride-containing ethylene glycol solution, i.e. fluorides react with magnesium in the matrix of AM-SCl alloy, forming a low-solubility magnesium fluoride product which deposits on the alloy surface and prevents further corrosion attack to the alloy. 

A saturated solution of magnesium fluoride, MgFj, has a solubility of 1.22x I0 moldm . Calculate the solubility product of magnesium fluoride. 

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