I
iTeachChem6mo ago
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colligative

this has been pestering me for a while
13 Replies
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🏎OP6mo ago
ok so the doubt is
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🏎OP6mo ago
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🏎OP6mo ago
why are mole fraction formulas different in both cases what has been changed
iTeachChem Helper
@Dexter
iTeachChem Helper
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.
Ishizora
Ishizora6mo ago
i think it's just that the no. of moles of solute in denominator while calculating mole fraction are neglected as they're comparatively low and doing so makes the solving easy as well ( q22 )
moles of solute <<< moles of solvent ; n + N ≈ N
moles of solute <<< moles of solvent ; n + N ≈ N
iTeachChem
iTeachChem6mo ago
Formula is the same, they are just ignoring the moles of the solute in the first case.
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🏎OP6mo ago
why? ohh ok thanks'
iTeachChem
iTeachChem6mo ago
can we close it out please?
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🏎OP5mo ago
by close it out u mean to close this thread will this thread be deleted forever because i wanna keep checking it again when i do solutions
iTeachChem
iTeachChem5mo ago
no no it will just get archived. so you hit +solved @username of person who helped. can add multiple usernames too. And you can search the thread with the name of the thread. so, you can edit the name and put it as something like "formula of mole fraction, solutions" so it is easy to find name of concept followed by name of chapter :)
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🏎OP5mo ago
+solved @Ishizora
iTeachChem Helper
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