Benzene Boils at 80

question 77

Multiple Choice

Benzene boils at 80.10 ° C and has a molal boiling constant, k_b, of 2.53 C/m. When 2.15 g of a compound is dissolved in 20.0 g of benzene, the resulting solution has a boiling point of 81.10 ° C. What is the molar mass of the solute?

• A) 272 g/mol
• B) 108 g/mol
• C) 78 g/mol
• D) 2.15 g/mol
• E) 93 g/mol

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