Combustion Analysis

Quinone, which is used in the dye industry and in photography, is an organic compound containing only C, H, and O. What is the empirical formula of the compound if you find that 0.105 g of the compound gives 0.257 g of CO₂ and 0.0350 g of H₂O when burned completely?

• CHO

• C₂H₁₀

• C₆H₄O₂

• C₃H₂O

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Quinone, which is used in the dye industry and in photography, is an organic compound containing only C, H, and O. What is the empirical formula of the compound if you find that 0.105 g of the compound gives 0.257 g of CO₂ and 0.0350 g of H₂O when burned completely? Given a molecular weight of approximately 108 g/mol, what is its molecular formula?

• CHO

• C₂H₄O₈

• C₆H₄O₂

• C₃H₂O

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

A 0.2500 g sample of a compound known to contain carbon, hydrogen and oxygen undergoes complete combustion to produce 0.3664 g of CO₂ and 0.1500 g of H₂O. What is the empirical formula of this compound?

• CH₂O

• CHO

• COH₃

• C₂H₄O

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Vanillin, a flavoring agent, is made up of carbon, hydrogen, and oxygen atoms. When a sample of vanillin weighing 2.500g burns in oxygen, 5.79 g of carbon dioxide and 1. 18 g of water are obtained. What is the EF?

• CHO

• C₈H₈O₃

• CH₁₃

• C₆H₁₂O₆

Tags

NGSS.HS-PS1-7