Question

If 10 moles of substance A dissolve in 50 moles of substance B, then what is the mole fraction of B in the solution​

Answer 1

Answer:

50/60

=5/6

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Answer 2

Mole fraction of substance B in solution is  $\frac{5}{6}$.

Step by step explanation:

• Given Data,

No. of moles of substance A (NA) = 10 moles

No. of moles of substance B (NB) = 50 moles

• Formula used,

Mole fraction of any substance is equal to the no. of moles of that substance divided by total no. of moles.

Mole Fraction of B (XB) = $\frac{NB}{NA+NB}$ .

• Calculation of Mole fraction,

Total no. of moles = NA + NB = 10 + 50 = 60 moles

 $XB=\frac{NB}{NA+NB}$

         $=\frac{50}{60}$

         $=\frac{5}{6}$

Mole Fraction of B in solution =  $\frac{5}{6}$.