Answer :
2.0 M Ca(NO3)2
First off, the greater the charge on your ions, the stronger the ion-dipole forces are between the ions and water molecules in solution. Ca2+ has a greater charge than K+. Also, the more concentrated the solution, the more ions you have, and therefore more ion-dipole forces overall. The stronger the intermolecular forces are, the higher the boiling point.
First off, the greater the charge on your ions, the stronger the ion-dipole forces are between the ions and water molecules in solution. Ca2+ has a greater charge than K+. Also, the more concentrated the solution, the more ions you have, and therefore more ion-dipole forces overall. The stronger the intermolecular forces are, the higher the boiling point.
The highest boiling point has been of 2.0 M [tex]\rm Ca(NO_3)_2[/tex]. Thus, option D is correct.
The boiling point has been the temperature at which the liquid starts to be converted to the gases. The boiling point has been higher when the inter-molecular forces between the molecules are higher.
With high inter-molecular forces, there has been higher amount of energy required to break the bonds, and change the state. The boiling point has also been dependent on the concentration, as higher the molecules present, there has been higher bonds, and more energy is required.
The Ca molecules has charge +2, while K has +1, this states, the stronger bonding of Ca with nitrate as compared to the K. Thus, calcium nitrate solution of 2 M has requires more energy, and thus have the highest boiling point.
The highest boiling point has been of 2.0 M [tex]\rm Ca(NO_3)_2[/tex]. Thus, option D is correct.
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