LiCl
LiI
LiF
LiBr
Please also explain why?
LiI
LiF
LiBr
Please also explain why?
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Actually contrary to the other answer LiF is insoluble in water. In this case LiI would be expected to be the most soluble. If you look up the literature values the solubility of LiF is 0.27g/100mL whereas LiBr is 166.7g/100mL.
Remember that dissolution is an equilibrium process, described by the solubility product (ksp), and equilibria tends to lean towards the most stable side. Large anions tend to be more stable in solution. So you would expect the I- anion to be the most stable in solution.
Another rationalization is to look at the bond strengths. A similar trend occurs when we look at acids of the form HX where X is a halogen. HF is a weak acid, although a very nasty one, and the HF bond is actually very strong so it's hard to break them apart in solution. So it works out that the smaller the halide the stronger it would bond in the salt lattice, and if the lattice is strong water will have a hard time ripping them apart, as intuition would suggest.
Remember that dissolution is an equilibrium process, described by the solubility product (ksp), and equilibria tends to lean towards the most stable side. Large anions tend to be more stable in solution. So you would expect the I- anion to be the most stable in solution.
Another rationalization is to look at the bond strengths. A similar trend occurs when we look at acids of the form HX where X is a halogen. HF is a weak acid, although a very nasty one, and the HF bond is actually very strong so it's hard to break them apart in solution. So it works out that the smaller the halide the stronger it would bond in the salt lattice, and if the lattice is strong water will have a hard time ripping them apart, as intuition would suggest.
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Hello,
The one that dissolves the best will be the one that is the most polar. LiF would be the most soluble because it would have the greatest difference in electronegativity between the atoms, leading it to be the most polar.
The one that dissolves the best will be the one that is the most polar. LiF would be the most soluble because it would have the greatest difference in electronegativity between the atoms, leading it to be the most polar.