Question

the mole fraction of water in 10% aqueous solution of H2O2​

Answer 1

Answer:

Mole fraction of water = 80/18+20/34.

= 68/77.

hence, 68/77 is the mole fraction of water in 20% aqueous solution of h2o2.

Answer 2

10% aqueous solution of H2O2​ means 10 g H2O2 in 100 g solution.

This means there is 90g water in the solution.

Moles of water = mass/ molar mass

                        =  90/18

                        = 5

Moles of H2O2 = Mass/ molar mass

                          = 10/ 34

                           = 0.29

      Mole fraction = moles of component/ sum of moles of all the components   mole fraction of water  = 5/ 5.29

                                      =0.94