Mass of ethanol to be added to 1.0 kg water to have the mole fraction equal to 0.20
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Mass of ethanol to be added to 1.0 kg water to have the mole fraction equal to 0.20
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Answer:
Thus, approximately 638.825 g of Ethanol must be added to make its mole fraction 0.2.
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Answer:
638.89
Explanation:
mass of ethanol added =>
0.2=m/46gmol−1)(m/46gmol−1)+(1000g/18gmol−1)
⇒m46g=0.2×100018×10.8
=13.89
m=13.89×46g=638.89g
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