Cinnamaldehyde (? = 132 $\degree$ C? K_b = 1 $\degree$ C/m, Boiling Point of Pure Ethanol = 78

question 95

Multiple Choice

Cinnamaldehyde (? = 132.15 g/mol) is used as a flavoring agent. What mass of cinnamaldehyde must be added to 175 g of ethanol to give a solution whose boiling point is 82.7 $\degree$ C? K_b = 1.22 $\degree$ C/m, boiling point of pure ethanol = 78.5 $\degree$ C

• A) 62.4 g
• B) 67.8 g
• C) 76.2 g
• D) 78.5 g
• E) 79.6 g

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