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Multiple Choice
Which of the following substances is most likely to dissolve in hexane?
A
C6H14 (hexane)
B
CH3OH (methanol)
C
NaCl (sodium chloride)
D
KNO3 (potassium nitrate)
Verified step by step guidance
1
Identify the nature of hexane: Hexane (C6H14) is a nonpolar solvent because it consists of carbon and hydrogen atoms with similar electronegativities, resulting in nonpolar covalent bonds.
Recall the principle 'like dissolves like': Nonpolar solvents tend to dissolve nonpolar solutes, while polar solvents dissolve polar or ionic solutes.
Analyze each substance's polarity: CH3OH (methanol) is polar due to the -OH group, NaCl and KNO3 are ionic compounds, and C6H14 (hexane) is nonpolar.
Compare the solutes to hexane: Since hexane is nonpolar, it will most likely dissolve the nonpolar substance, which is C6H14 (hexane) itself.
Conclude that ionic compounds (NaCl, KNO3) and polar molecules (CH3OH) are not soluble in nonpolar hexane, confirming that C6H14 is the most likely to dissolve in hexane.