Question

3.65 grams of HCL is dissolved in 180grams of water .what is the Mole Fraction of water andHCL?​

Answer 1

mole fraction = nA/(nA+nB)

where n = no. of moles

mole fraction of HCl = (moles of HCl) / (moles is total solution)

= (3.65/36.5)/((3.65/36.5)+(180/18))

= 0.0099

mole fraction of water = (moles of water) / (moles is total solution)

= (180/18)/((3.65/36.5)+(180/18))

= 0.99