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How to Write the Formula for Sodium acetate

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How to Write the Formula for Sodium acetate

72,371 views October 25, 2019 1:46

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ChannelWayne Breslyn

Description from the creator

In this video we'll write the correct formula for Sodium acetate, CH3COONa.

To write the formula for Sodium acetate we'll use the Periodic Table, a Common Ion Table, and follow some simple rules.

Because Sodium acetate has a polyatomic ion (the group of non-metals after the metal) we'll need to use a table of names for common polyatomic ions, in addition to the Periodic Table.

Keys for Writing Formulas for Ternary Ionic Compounds:

1. Write the element symbol for the metal and its charge using Periodic Table.
2. Find the name and charge of the polyatomic ion on the Common Ion Table.
3. See if the charges are balanced (if they are you're done!)
4. Add subscripts (if necessary) so the charge for the entire compound is zero.
5. Use the crisscross method to check your work.
Notes:

- Don't write the subscript '1'.
- If you use the criss-cross method and end up with something like Ca2S2 you'll need to reduce the subscripts to Ca1S1 which we write CaS.

Note: It is possible to have two polyatomic ions such as NH4NO3. In this case find and write both names as found on the Common Ion Table.


For a complete tutorial on naming and formula writing for compounds, like Sodium acetate and more, visit:

breslyn.org/chemistry/naming

Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).

About this tutorial

Wayne Breslyn published this 1:46 video tutorial on October 25, 2019. It has been watched 72,371 times on YouTube.

Category
Education
Duration
1:46
Published
October 25, 2019
Views
72,371
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Further reading

  • Sodium Acetate Formula - Chemical Formula For Sodium ... byjus.com

    Sodium Acetate formula is one of the most confusing chemical formulas in chemistry. To recall about sodium acetate, it is a trihydrate sodium salt of acetic acid and is also known as sodium ethanoate (abbreviated as NaO…

  • Sodium acetate | CH3COONa - PubChem pubchem.ncbi.nlm.nih.gov

    Sodium acetate | CH3COONa or C2H3NaO2 | CID 517045 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological ...

  • What is the formula for Sodium acetate? - Answers answers.com

    The formula for Sodium Acetate is: NaCH3COO It can also be written as CH3COONa or NaC2H3O2. CH3COONa is probably the best way to write it because it reflects that the positively charged sodium ion ...

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