Phthalocyanine is a large molecule used in printing inks and dyes.Elemental analysis showed that it consists of 74.69% C,3.525% H,and 21.77 % N,and has a molar mass of 514.54 g/mol.What is its molecular formula?

Question

Quizplus · Accepted Answer

The empirical formula is determined by converting the percentages to moles and finding the simplest ratio. The empirical formula mass is then compared to the molar mass to find the molecular formula. C₃₂H₁₈N₈ matches the given molar mass of 514.54 g/mol.

Phthalocyanine Is a Large Molecule Used in Printing Inks and Dyes.Elemental