What is mole fraction solubility?

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Mole fraction solubility is defined as the ratio of the number of moles of solute to the total number of moles of both solute and solvent, expressed mathematically as mole fraction solubility = (number of moles of solute)/(number of moles of solute + number of moles of solvent). Participants in the discussion express uncertainty about a specific problem related to this concept, with multiple individuals unable to achieve the expected answer of 8.98 x 10^-4. Instead, they report results that are significantly lower, with one participant noting a value approximately six times less than the expected result. This raises questions about the accuracy of the provided answer.
jayadds
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As asked above, what is mole fraction solubility? From what I've been taught, it is the following equation:

mole fraction solubility = (number of moles of solute)/(number of moles of solute + number of moles of solvent)

Is that even correct?

In actual fact, there's a question that deals with this problem. I've attached it for you to see. I've attempted it several times but I can't seem to reach the answer which is supposedly
8.98 x 10^-4

Many thanks.
 

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Definition looks logical, even if it is the first time I hear about it.

And I am unable to reproduce the result as well, I got solubility almost exactly 6 times lower.
 
Borek said:
Definition looks logical, even if it is the first time I hear about it.

And I am unable to reproduce the result as well, I got solubility almost exactly 6 times lower.

Thank you for confirming it with me. I also had a value that was considerably lower as well. The answer may be incorrect then.
 
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