Question

What is the molecular formula of a compound with the empirical formula so and molecular weight 96.13?

Answer 1

Answer:

                  Molecular Formula  =  S₂O₂  (Disulfur Dioxide)

Solution:

Molecular formula is calculated by using following formula,

                    Molecular Formula  =  n × Empirical Formula  ---- (1)

Also, n is given as,

                     n  =  Molecular Weight / Empirical Formula Weight

Molecular Weight  =  96.13 g.mol⁻¹

Empirical Formula Weight  =  32.06 (S) + 16.0 (O)  =  48.06 g.mol⁻¹

So,

                     n  =  96.13 g.mol⁻¹ ÷ 48.06 g.mol⁻¹

                     n  =  2.0002 ≈ 2

Putting Empirical Formula and value of "n" in equation 1,

                    Molecular Formula  = 2 × SO

                    Molecular Formula  =  S₂O₂  (Disulfur Dioxide)