{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

L15 - Types of Chemical Formulas A chemical formula is...

Info icon This preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
    Types of Chemical Formulas An  empirical formula  indicates the relative number of atoms of each  element in the compound.  It is the simplest type of formula. A  molecular formula  shows the actual number of atoms of each  element in a molecule of the compound. A structural formula  shows the number of atoms and the bonds  between them, that is, the relative placement and connections of  atoms in the molecule. A  chemical formula  is comprised of element symbols and numerical subscripts  that show the type and number of each atom present in the smallest unit of the  substance. The empirical formula for hydrogen peroxide is HO. The molecular formula for hydrogen peroxide is H 2 O 2 . The structural formula for hydrogen peroxide is H-O-O-H.
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
    Ice (solid H 2 O): solid consisting of molecules Ionic solid: solid consisting of ions
Image of page 2
    Common Monoatomic Ions H - hydride Na + sodium H + hydrogen Li + lithium fluoride F - Cs + cesium K + potassium Ag + silver chloride Cl - bromide Br - iodide I - Mg 2+ magnesium Sr 2+ strontium Ca 2+ calcium Zn 2+ zinc Ba 2+ barium Cd 2+ cadmium Al 3+ aluminum +1 +2 +3 Cations Charge Formula Name Anions Charge Formula Name -1 -2 -3 oxide O 2- sulfide S 2- nitride N 3- Common ions are in blue (should be memorized).
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
    Some Common Polyatomic Ions Formula Cations NH 4 + Common Anions H 3 O + Formula ammonium hydronium Name Name CH 3 COO -               acetate CN - cyanide OH - hydroxide ClO 3 - chlorate NO 2 - nitrite NO 3 - nitrate MnO 4 -  permanganate CO 3 - 2 carbonate CrO 4 - 2 chromate Cr 2 O 7 - 2 dichromate O 2 - 2 oxide SO 4 - 2 sulfate PO 4 - 3 phosphate
Image of page 4
    Naming  oxoanions Prefixes  Root  Suffixes  Examples root per ate ClO 4 -  perchlorate ate root ClO 3 - chlorate ite root ClO 2 - chlorite ite hypo root ClO - hypochlorite No. of O atoms Figure 2.20
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
    Sample Problem 2.8 Determining Names and Formulas of Ionic  Compounds Containing Polyatomic Ions PLAN: SOLUTION:
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern