An unknown compound contains only carbon and hydrogen.When it undergoes combustion analysis,it produces 3.767 g of CO₂ and 0.616 g of H₂O.What is the empirical formula? A) C₅H₄ B) C₇H₁₄ C) C₂H₃ D) CH E) CH4

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The empirical formula is CH.The combustion reaction is:C_xH_y + (x + y/4)O₂ → xCO₂ + y/2H₂OFrom the combustion analysis, we have:3.767 g CO₂ = 3.767 g / 44.01 g/mol = 0.0856 mol CO₂0.616 g H₂O = 0.616 g / 18.02 g/mol = 0.0342 mol H₂OFrom the stoichiometry of the combustion reaction, we have:x = 0.0856 mol CO₂y = 2 * 0.0342 mol H₂O = 0.0684 mol H₂OTherefore, the empirical formula is CH.

An Unknown Compound Contains Only Carbon and Hydrogen