Question
Asked Feb 7, 2020
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Calculate the vapor pressure of water  over the resulting solution when 45.8 g sugar (mw=342.296 amu) is dissolved in 150 mL of H2O. The vapor pressure od pure H2O is 24.2.

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Expert Answer

Step 1

Density of water = 1 g/ml

So, mass of water = volume x density = 150 ml x 1 g/ml =150 g

Number of moles of water, n1 = mass/ molar mass = 150 g /18 g/mole = 8.3 mole

Number of moles of sugar,n2 = given mass / molar mass = 45.8 g / 342.3 g/mole = 0.13 m...

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