Question

sulphuric acid is 95.8%by mass .calculate mole fraction and molarity of H2SO4 of density 1.91kg/cm3​

Answer 1

Answer:

For mole Fraction:-

No. of moles of H2SO4=95.8/98=0.9776

No. of Moles of H2O= 4.2/18=0.2333

Mole Fraction=\frac{moles of H2SO4}{Total moles}

Totalmoles

molesofH2SO4

=0.8073

For Molarity:-

Volume of acid=100/1.91=52.3560 cm^3

molarity= \frac{95.8}{98}* \frac{1000}{52.3560}

98

95.8

∗

52.3560

1000

=18.6712