Question

the concentration of H2 S o4 in a bottle label concentrated sulphuric acid is 18 M the solution has density of 1.84 gram per centimetre cube What is the mole fraction and weight percentage of H2 S o4 in the solution​

Answer 1

let the mass of solution be x

mass of h2so4 = x*98/100 = 49x/50

now mole fraction= no. of moles of sulphuric acid/ no. of moles of solution

= x/100

mass of water = x= (49*x/50)= x/50

no. of moles of water= x/50/18 = x/900

mole fraction = x/100/(x/100)+(x/900)

= (x/100)*(900/9x+1)

=9x/9x+1

now it is your choice that what will be the mass of solution

if x =100 g then

then mole fraction = 0.1