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CBSE Class 11-science Answered

Find out the emperical formula and molecular formula in organic compund contain 62.07 % Carbon,10% Hydrogen,and 14% Nitrogen. The molecular mass of compound is 114 gm/mole
Asked by Shreypanchalspiky | 06 Jul, 2018, 11:24: PM
answered-by-expert Expert Answer
The total composition is 100
 
Given:
 
Carbon=62.07
 
Hydrogen =10
 
Nitrogen =14
 
Oxygen =(100-86.07)
 
            =13.93
 

Element

% composition

Atomic weight

Ratio

Simplest Ratio

Carbon

62.07

12

5.17

5.90= 6

Hydrogen

10

1

10

11.4=11

Oxygen

13.93

16

0.870

1

Nitrogen

14

14

1

1.1=1

 So the empirical formula is: C6H11NO

Empirical formula mass = 113

 

straight n equals fraction numerator Mass over denominator Empirical space mass end fraction straight n equals space 113 over 114 straight n equals 0.99 straight n almost equal to 1 Molecular space formula space equals space straight n cross times space Empirical space formula space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals 1 cross times open parentheses straight C subscript 6 straight H subscript 11 NO close parentheses Molecular space formula space equals space straight C subscript 6 straight H subscript 11 NO

Empirical formula is C6H11NO

Molecular formula is C6H11NO

Answered by Varsha | 09 Jul, 2018, 08:30: PM

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