Molecular formulas
This presentation is the property of its rightful owner.
Sponsored Links
1 / 7

MOLECULAR FORMULAS PowerPoint PPT Presentation


  • 84 Views
  • Uploaded on
  • Presentation posted in: General

MOLECULAR FORMULAS. Empirical Formulas – Simplest whole number ratio of atoms in a compound Molecular formula – A chemical formula that shows the actual number and kinds of atoms present in a compound. Which pair of molecules has the same empirical formula

Download Presentation

MOLECULAR FORMULAS

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Molecular formulas

MOLECULAR FORMULAS


Molecular formulas

  • Empirical Formulas –

    • Simplest whole number ratio of atoms in a compound

  • Molecular formula –

    • A chemical formula that shows the actual number and kinds of atoms present in a compound


Molecular formulas

  • Which pair of molecules has the same empirical formula

  • A) C2H4O2 C6H12O6

    or

  • B) NaCrO4 Na2Cr2O7


Molecular formulas

Find the molecular formula for each of the following compounds given its empirical formula and molar mass

  • ethylene glycol (CH3O), used in antifreeze, molar mass of 62g/mol

  • P-dichlorobenzene (C3H2Cl), mothballs, molar mass of 147g/mol.


Molecular formulas

  • You find that 7.36 g of a compound has decomposed to give 6.93 g of oxygen. The only other element in the compound is hydrogen. If the molar mass is 34.0g.mol, what is the molecular formula?


Molecular formulas

  • The compound methyl butanoate smells like apples. Its percent composition is 58.8% C, 9.8% H and 31.4 % oxygen. Methyl butanoate’s molar mass is 102 g/mol, what is the molecular formula?


Molecular formulas

  • Determine the molecular formula for the following compound

    40.0% C, 6.6% H and 53.4% O

    molar mass =120g/mol


  • Login