Question

4. One mole of any substance contains 6.022 × 1023 atoms/molecules. Number of molecules
of H2SO4 present in 100 mL of 0.02M H2SO4 solution is ______
a) 12.044 × 1021 molecules
b) 6.022 × 1023 molecules
c) 1 × 1023 molecules
d) 12.044 × 1020 molecules

Answer 1

Answer:

a part

Explanation:

Moles of H2SO4= Molarity of H2SO4× Volume of solution (L)

=0.02×0.1

=2×10−3 moles

No. of H2SO4 molecules =2×10−3×6.022×1023=12.044×1020 molecules

Therefore, the correct option is A.