Determine the Freezing Point of a Solution That Contains 78

question 120

Multiple Choice

Determine the freezing point of a solution that contains 78.8 g of naphthalene (C₁₀H₈, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0.877 g/mL) .Pure benzene has a melting point of 5.50°C and a freezing point depression constant of 4.90°C/m.

• A) 4.76°C
• B) 4.17°C
• C) 0.74°C
• D) 1.33°C
• E) 1.68°C

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