객관식
Which of the following equations best represents the behavior of BaSO_4 in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
객관식
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)
검증된 단계별 안내1
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.
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