Question

Calculate the molality of h2so4 in which mole fraction of h2o is 0.85

Answer 1

HEYY..

Solution :

Molality of H2SO4=?H2SO4=?

n1n1= number of moles of H2OH2O and n2n2= number of moles of H2SO4H2SO4 .

Molality of H2SO4H2SO4 means the number of moles of H2SO4H2SO4 present in 1000g1000g of water

g.mol wt of water (H2O)=2×1)+16=18g(H2O)=2×1)+16=18g

Mole fraction of H2OH2O in solution =0.85=0.85

Mole fraction of H2SO4H2SO4 in solution =1−0.85=0.15=1−0.85=0.15

n1n1 = no of moles of H2OH2O

=wt.of.H2Og.mol.wt.ofH2O=wt.of.H2Og.mol.wt.ofH2O

=100018=100018

=55.55=55.55

n2n2 = no of moles of H

hope it'll help you ..❤..