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Compute the empirical and molecular formulas for each of

Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr ISBN: 9780321768414 33

Solution for problem 12P Chapter 1

Organic Chemistry | 8th Edition

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Organic Chemistry | 8th Edition | ISBN: 9780321768414 | Authors: L.G. Wade Jr

Organic Chemistry | 8th Edition

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Problem 12P

Problem 12P

Compute the empirical and molecular formulas for each of the following elemental analyses. In each case, propose at least one structure that fits the molecular formula.

C

H

N

C1

MW

(a)

40.0%

6.67%

0

0

90

(b)

32.0%

6.67%

18.7%

0

75

(c)

25.6%

4.32%

15.0%

37.9%

93

(d)

38.4%

4.80%

0

56.8%

125

Step-by-Step Solution:
Step 1 of 3

Solution 12P

(a)        For the unknown compound, we do the following computations

        The first computation divides the number of grams of carbon by 12, the number of grams of hydrogen by 1, and the number of grams of oxygen by 16. We compare these numbers by dividing then by the smallest number, 3.33. The final result is ratio of one carbon to two hydrogens to oxygen. This result gives the empirical formula  or . The given molecular weight is 90, so our unknown compound must contain thrice this may atoms. The molecular formula must be 3() =

(b)        For unknown compound, we do the following computations:

This result given the empirical formula .

The weight of one unit is 75 and the given molecular weight is 75, so the molecular formula must be .

(c)        For unknown compound, we do the following computations:

This result gives the empirical formula  and the weight of one NOCl unit is 93. The given molecular weight is also 93, so the molecular formula of unknown compound must be NOCl .

(d)        We do the following computations:

This result gives the empirical formula and weight of one  unit is 62.5. The given molecular weight is 125, so out unknown compound must contain twice this many atoms.

The molecular formula must be

Step 2 of 3

Chapter 1, Problem 12P is Solved
Step 3 of 3

Textbook: Organic Chemistry
Edition: 8
Author: L.G. Wade Jr
ISBN: 9780321768414

This textbook survival guide was created for the textbook: Organic Chemistry, edition: 8. Organic Chemistry was written by and is associated to the ISBN: 9780321768414. The answer to “Compute the empirical and molecular formulas for each of the following elemental analyses. In each case, propose at least one structure that fits the molecular formula.CHNC1MW(a)40.0%6.67%0090(b)32.0%6.67%18.7%075(c)25.6%4.32%15.0%37.9%93(d)38.4%4.80%056.8%125” is broken down into a number of easy to follow steps, and 26 words. The full step-by-step solution to problem: 12P from chapter: 1 was answered by , our top Chemistry solution expert on 05/06/17, 06:41PM. This full solution covers the following key subjects: Molecular, formula, compute, elemental, empirical. This expansive textbook survival guide covers 25 chapters, and 1336 solutions. Since the solution to 12P from 1 chapter was answered, more than 401 students have viewed the full step-by-step answer.

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