Question

70g of glucose and 40g of NaCl are dissolved in 900g of h20. calculate mole fraction of NaCl?​

Answer 1

Answer:

1.34*10^-2

Explanation:

Use the formula n=Given mass / Molar mass, and calculate The number of moles of each compound

You will be getting

n (Nacl)=0.684

n (C6H12o6)=0.3886

n(h20) =50

Mole fraction of Nacl=number of moles of NaCl/sum of moles of all compounds

                                 =0.684/(0.684+0.3886+50)  

                                 =0.0134

                                 =1.34*10^-2 mol.