If two compounds have the same empirical formula but different molecular formulae, they must have

Question

If two compounds have the same empirical formula but different molecular formulae, they must have (A) different percentage composition (B) different molecular weights (C) same viscocity (D) same vapour density

Tardigrade Admin · Accepted Answer

Since, the molecular formula is n times the empirical formula, therefore, different compounds having the same empirical formula must have different molecular weights.

Q. If two compounds have the same empirical formula but different molecular formulae, they must have

different percentage composition

different molecular weights

same viscocity

same vapour density

Since, the molecular formula is $n$ times the empirical formula, therefore, different compounds having the same empirical formula must have different molecular weights.