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Ira Lisetskai [31]
2 years ago
14

D) Evaluate your answer and explain why your answer makes sense​

Chemistry
1 answer:
Alik [6]2 years ago
4 0

Answer:

?

Explanation:

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The vapor pressure of water at 25.0°C is 23.8 torr. Determine the mass of glucose (molar mass = 180 g/mol) needed to add to 500.
mrs_skeptik [129]

According to Raoult's law the relative lowering of vapour pressure of a solution made by dissolving non volatile solute is equal to the mole fraction of the non volatile solute dissolved.

the relative lowering of vapour pressure is the ratio of lowering of vapour pressure and vapour pressure of pure solvent

\frac{p^{0-}p}{p^{0}}=x_{B}

Where

xB = mole fraction of solute=?

p^{0}=23.8torr

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x_{B}=\frac{23.8-22.8}{23.8}=0.042

mole fraction is ratio of moles of solute and total moles of solute and solvent

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putting the values

molefraction=\frac{molessolute}{molesolute+molessolvent}

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1.167+0.042(molesolute)=molessolute

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3 0
3 years ago
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