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These compounds are found in many natural flavors and scents. Calculate the empirical

Chapter 6, Problem 93P

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QUESTION:

These compounds are found in many natural flavors and scents. Calculate the empirical formula for each compound.

(a) ethyl butyrate (pineapple oil): C, 62.04%; H, 10.41%; O, 27.55%

(b) methyl butyrate (apple flavor): C, 58.80%; H, 9.87%; O, 31.33%

(c) benzyl acetate (oil of jasmine): C, 71.98%; H, 6.71%; O, 21.31%

Questions & Answers

QUESTION:

These compounds are found in many natural flavors and scents. Calculate the empirical formula for each compound.

(a) ethyl butyrate (pineapple oil): C, 62.04%; H, 10.41%; O, 27.55%

(b) methyl butyrate (apple flavor): C, 58.80%; H, 9.87%; O, 31.33%

(c) benzyl acetate (oil of jasmine): C, 71.98%; H, 6.71%; O, 21.31%

ANSWER:

Solution 93P

Here, we are going to calculate the empirical formula for the given compounds.

Step1:

Empirical formula gives the simplest ratio of elements in a compound.

Step2:

  1. In order to determine the whole number ratio of C, H and O in the formula, the following table is drawn:

Element

%

Relative number of atoms(% / atomic mass)

Simple ratio

Whole number ratio

C

62.04

62.04/12 = 5.17

5.17/1.72 = 3.01

3

H

10.41

10.41/1 = 10.41

10.41/1.72 = 6.05

6

O

27.55

27.55/16 = 1.72

1.72/1.72 = 1

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