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.
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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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