A) 0.167, 22.20
B) 0.167, 11.11
C) 0.2, 22.20
D) 0.2, 11.11
Correct Answer: B
Solution :
Mole of \[NaOH=\frac{8}{40}=0.2\] Mole of water \[=\frac{18}{18}=1\] Total moles \[=1+0.2=1.2\] Mole fraction of \[NaOH\] \[=\frac{Moles\,of\,NaOH}{Total\,moles}=\frac{0.2}{1.2}=0.167\] \[Molality=\frac{Moles\,of\,NaOH}{Mass\,of\,solvent}\times 1000\] \[=\frac{0.2}{18}\times 1000=11.11m\]You need to login to perform this action.
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