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

question 138

Multiple Choice

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?

• A)C₁₆H₉N₄
• B)C₃₀H₈N₁₀
• C)C₃₂H₁₈N₈
• D)C₃₂H₄N₉
• E)C₁₆H₁₈N₄

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