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Some Basic Concepts of Chemistry question

2002 · Q121
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Some Basic Concepts of Chemistry question

2002 · Q121

NEETChemistrySome Basic Concepts of ChemistryMCQ+4 / −1
The percentage of C, H and N in an organic compound are 40%, 13.3% and 46.7% respectively then empirical formula is
  1. A
    C3H13N3
  2. B
    CH2N
  3. C
    CH4N
  4. D
    CH6N
View written solutionFree

Correct answer: C

Element%Atomic
mass		Relative
no. of atoms		Simplest
ratio of atoms
1C4012${{40} \over {12}}$ = 3.33${{3.33} \over {3.3}}$ = 1
2H13.31${{13.3} \over 1}$ = 13.3${{13.3} \over {3.3}}$ = 4
2N46.714${{46.7} \over {14}}$ = 3.3${{3.3} \over {3.3}}$ = 1


$ \therefore $ The empirical formula is CH4N.
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