Concept explainers
Apply your knowledge of polarity and solubility topredict whether solvation is possible in each situationshown in Table 14.9. Explain your answers.
Interpretation:
Using knowledge of polarity and solubility the solvation of a solute in a particular solvent have to be predicted.
Concept introduction:
Solvation is the process where the solute particles are surrounded by the solvent molecules to form a solution. “Like dissolves like” rule is applied to determine whether solvation will occur in a specific solvent.
Answer to Problem 104A
- MgCl2(s) is dissolved in H2O(l)
- NH3(l) is not dissolved in C6H6(l)
- H2(g) is not dissolved in H2O(l)
- I2(l) is dissolved in Br2(l).
Explanation of Solution
“Like dissolves like” rule is applied to determine whether solvation will occur in a specific solvent. The polar molecules like to dissolve in polar solvent and the nonpolar molecules like to dissolve in nonpolar solvent.
- Both MgCl2 and H2O are polar molecule. So, MgCl2(s) likes todissolve in H2O(l).
- NH3is a polar molecule while C6H6 is a nonpolar solvent. So, NH3(l) is not dissolved in C6H6(l)
- H2 is a nonpolar molecule while H2O is a polar solvent. So, H2(g) is not dissolved in H2O(l)
- Both I2and Br2 are nonpolar liquid. So, I2(l) is dissolved in Br2(l).
Chapter 14 Solutions
Chemistry: Matter and Change
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