Multiple Choice
Which of the following compounds is most soluble in water?
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6. Chemical Quantities & Aqueous Reactions
Solubility Rules
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Which of the following compounds is expected to be most soluble in benzene?
A
KNO_3 (potassium nitrate)
B
C_6H_6 (benzene)
C
NaCl (sodium chloride)
D
CH_3OH (methanol)
Verified step by step guidance1
Understand the principle 'like dissolves like,' which means that solvents tend to dissolve solutes with similar polarity and intermolecular forces.
Identify the polarity of benzene (C_6H_6): benzene is a nonpolar solvent due to its symmetrical ring structure and lack of significant dipole moment.
Analyze the polarity of each solute: KNO_3 and NaCl are ionic compounds and highly polar, CH_3OH (methanol) is polar and can form hydrogen bonds, while benzene (C_6H_6) is nonpolar.
Compare the solutes' polarity to benzene's polarity: nonpolar benzene will better dissolve nonpolar substances or those with similar nonpolar characteristics.
Conclude that benzene (C_6H_6) itself is most soluble in benzene because it is nonpolar, whereas ionic compounds and polar molecules like KNO_3, NaCl, and CH_3OH are not expected to be soluble in nonpolar benzene.
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