Question

calculate the mole fraction of naoh in asolution containing 20g of naoh per 360g of water

Answer 1

Answer:

0.121

Explanation:

15% NaOH by mass is 15g of NaOH in (100-15)g of solution.

No. Of moles of NaOH in solution = 0.65

No of moles of Water in solution = 4.72

Mole Fraction = ((Moles of Solvent)(Moles Of Solute)+(Moles of Solvent))

OR

((Moles of Solvent)Total Number Of Moles)

= 0.65 / 5.37

= 0.121