The characteristic odor of pineapple is due to ethyl butyrate, a compound contai

Question

The characteristic odor of pineapple is due to ethyl butyrate, a compound containing carbon, hydrogen, and oxygen. Combustion of 1.95mg of ethyl butyrate produces 4.42mg of CO2 and 1.81mg of H2O. What is the empirical formula of the compound?

Nicotine, a component of tobacco, is composed of C, H, and N. A 3.150?mg sample of nicotine was combusted, producing 8.5452mg of CO2 and 2.450mgof H2O. What is the empirical formula for nicotine?

Please show step by step for all points!  I'm so confused as to how to do this problem and my exam is next week!  Thanks so much!

Explanation / Answer

% C = ( 12 x 100 x wt of CO2/44 x wt of comp)

       = ( 12 x100 x 4.42/1.95) = 61.82

H% = ( 2 x wt of H2O xx 100/18 xwt of comp)

           = 2 x 1.81 x100/(18 x1.95)   = 10.313

% of O = 100-10.31-61.82 = 27.866

C = 61.82/12 = 5.09 , H = 10.313/1 = 1031., O = 27.866/16 = 1.74,

now dividing by least term 1.74

O = 5.09/1.74 =3, H = 6, O = 1,

empical formula = C3H6O

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.