Question

One mole of any substance contains 6.022×10^23 atoms/molecules.Number of molecules of H2SO4 present in 100mL of 0.02M H2SO4 solution is

Answer 1

In order to find the answer for the above we have to calcolate the molecular mass of H2SO4.

Atomic mass of

hydrogen=1u

oxygen=16u

sulphur=32u

Molecular mass is

= {(2×1)+32+(16×4)}

=2+32+64

=98u

molecular mass is 98u

1mole=6.022×10^23 atoms

then 0.02mole=6.022×10^23

---------------------- ×0.02

98

=0.001229×10^23moles

100 ml consists=0.001229×100

=0.1229moles