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An organic compound made of C, H and N c...

An organic compound made of C, H and N contains 20% of nitrogen. Its molecular weight is

A

70

B

140

C

100

D

65

Text Solution

Verified by Experts

The correct Answer is:
A
`%" of N"=("Mass of N")/("Molecular mass of compound")xx100`
the compound must contain at least one N-atom.
Hence, `20=(14)/("Molecular mass")xx100`
`"or Molecular mass"=(14)/(20)xx100=70`
Note. If two N atoms are present in the molecule, molecular mass would be 140.
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Knowledge Check

  • An organic compound made of C, H and N contains 20% nitrogen. Its molecular weight is.

    A
    70
    B
    140
    C
    100
    D
    65

  • An organic compound made of C,H and N contain 20% nitrogen.Its molecular weight I

    A
    70
    B
    140
    C
    100
    D
    65

  • An organic compound made of C , H and N contains 20% nitrogen. What will be its molecular mass if it contains only one nitrogen atom in it?

    A
    70
    B
    140
    C
    100
    D
    65

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