Question

46 gm of NaCl is dissolved in 100g water . Calculate molality and mole fraction of the solute


with full solution and explanation​

Answer 1

Answer:

m=7.86

X= 0.21

Explanation:

m=n/wt. of solvent (kg)

= (46/58.5)×1000/100

 =.786×10

 = 7.86

molality = 7.86 mol/g

mole fraction = no. of moles of nacl /total no. of moles

  =[46/58.5]/(46/58.5)+(54/18)

  =0.786/(0.786+3)

 =0.786/3.786

=0.21