Home
Class 11
CHEMISTRY
What is the molecular formula of a compo...

What is the molecular formula of a compound, its empirical formula is `CH_2O` and its molecular weight is 90?

A

`C_3H_6O_3`

B

`C_6H_6O_3`

C

`C_4H_8O_4`

D

`C_2H_6O_2`

Text Solution

Verified by Experts

The correct Answer is:
A
Empirical formula `=CH_2O`, Molecular weight = 90
Empirical formula weight of `CH_2O = 12+(1xx2)+16=30 `
`n =("molecular weight")/("empirical formula weight")=(90)/30 = 3 " " :. ` molecular formula `=(CH_2O)_3 =C_3H_6O_3`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS

    BRILLIANT PUBLICATION|Exercise LEVEL- III (Statement Type)|6 Videos

  • p-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL- III (Linked Comprehension Type) (Paragraph IV )|3 Videos

  • REDOX REACTIONS

    BRILLIANT PUBLICATION|Exercise LEVEL -III|50 Videos

Similar Questions

Explore conceptually related problems

Write the molecular formula.

How is molecular formula different from the empirical formula?

Knowledge Check

  • Molar mass of acetic acid is 60. Its empirical formula is:

    A
    `CH_2O`
    B
    `C_2H_4O_2`
    C
    `C_3H_6O_3`
    D
    `C_2H_4O_3`

  • Molar mass of acetic acid is 60. Its empirical formula is:

    A
    `CH_(2)O`
    B
    `C_(2)H_(4)O_(2)`
    C
    `C_(3)H_(6)O_(3)`
    D
    `C_(2)H_(4)O_(3)`

  • The molecular formula of a compound gives the actual number of atoms of each element present in a molecule of the compound. It is either the same as the empirical formula or a simple multiple of it. Molecular formula= "(Empirical formula)"_n Where, n is a whole number and its value is obtained by dividing the molecular mass of the compound by its empirical formula mass. Structural formula is that formula which shows in what way different kinds of atoms in a molecule are united or linked together. H-undersetundersetunderset("ethyl")(H)(|)oversetoverset(H)(|)C-undersetundersetunderset("alcohol")(H)(|)oversetoverset(H)(|)C-O-H " "H-undersetundersetunderset("dimethyl ether")(H)(|)oversetoverset(H)(|)C-O-undersetunderset(H)(|)oversetoverset(H)(|)C-H The empirical formula of a compound is CH_2 One mole of this compound has a mass of 42 g. Its molecular

    A
    `C_2H_2`
    B
    `C_3H_6`
    C
    `C_3H_8`
    D
    `CH_4`

    • Similar Questions

    Explore conceptually related problems

    Give an example of molecule in which. (i) Ratio of molecular formula and empirical formula is 6: 1 (ii) Molecular weight is 2 times of the empirical formula weight. (iii) The empirical formula is CH_2O and ratio of molecular formula weight and empirical fórmula weight is 6 .

    What is the general molecular formula of alkanes homologous series?

    Molecular formula of pentene is ………………..

    Find the molecular formula of the compound with molar mass, 78g mol^-1 and empirical formula CH.

    How the molecular formula is different from that of the Empirical formula?

    Home
    Profile