Interpretation:
The motor oil and gasoline are miscible; the reason has to be predicted.
Concept introduction:
Like dissolves like principle: ‘Like dissolves like’ principle says that polar compounds including ionic compound should be more soluble in polar solvent. Likewise, non–polar compound should be more soluble in non–polar solvent.
Polar molecule: Polar molecules have large dipole moments.
Non-Polar molecules: Non-polar molecules have bonded atoms with similar electronegativity results to have zero dipole moments.
Solubility is the quantity of solute (solid, liquid or gas) that will dissolve in a given amount of solvent (solid, liquid or gas) at definite temperature and pressure. Solubility depends on the physical and chemical property of solvent, solute and concentration of the solution.
Explanation of Solution
From the two given molecule namely motor oil and gasoline; motor oil is non-polar. Gasoline is also non-polar molecule as both are hydrocarbons. According to ‘like dissolves like’ principle, the gasoline and motor oil possess same interactions.
Therefore, motor oil is readily soluble in gasoline.
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Chapter 13 Solutions
OWLv2 for Moore/Stanitski's Chemistry: The Molecular Science, 5th Edition, [Instant Access], 1 term (6 months)
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