Question

The concentration of h2so4 in bottle is labeled as con sulphuric acid is 18M . The soluty has density of 1.84 cm3

Answer 1

Answer:

concentration of H2SO4 solution is 18 m means 18 moles of H2SO4 is present in 1 litre of solution.

GIVEN , DENSITY OF SOLUTION=1.84. CM

so mass of 1 litre solution=1.84g/cm^3

so mass of 1 litre solution= 1000 cm^3×1.84g/cm^3

=1840g

MASS OF 18 MOLE OF H2SO4=18 ×molar mass of H2SO4

18×98=1764g

then , mass of water in solution=mass solution minus mass of H2SO4

=1840-1764

76g

then number of mole of water=76/18=4.22mol

so, the mole fraction of H2SO4 =Mole of H2SO4 /(Mole of H2SO4 +Mole of water)

18/(18+4.22)

0.81

mass percentage of H2SO4 =Mass of H2SO4 /Mass of solution×100

1764/1840×100

95.86%