A Solution Is Prepared by Adding 30

question 46

Multiple Choice

A solution is prepared by adding 30.00 g of lactose (milk sugar) to 110.0 g of water at 55 °C. The partial pressure of water above the solution is torr. The vapor pressure of pure water at 55 °C is 118 torr. The MW of lactose is 342.3 g/mol.

• A) 169.4
• B) 1.670
• C) 92.7
• D) 94.1
• E) 116.3

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