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-   -   How to write chemical equations from word equations? (https://www.askmehelpdesk.com/showthread.php?t=380351)

  • Jul 27, 2009, 08:53 AM
    Ethan Hunt
    How to write chemical equations from word equations?
    How to write chemical equations from word equations?
    Like compounds like Sodium Chloride
  • Jul 27, 2009, 09:15 AM
    Unknown008

    You need to know the valencies of the concerned elements. Sodium has valency one, and so does chloride. Then you sort of 'cross multiply'.



    That gives

    Now, say, calcium fluoride. Calcium has valency 2 and fluoride valency 1.



    That gives

    Now iron (III) oxide. Iron valency 3, and oxygen (from oxide) 2



    That gives

    Is that OK?
  • Jul 28, 2009, 01:58 AM
    Ethan Hunt
    Thanks Very much.
  • Jul 28, 2009, 02:00 AM
    Ethan Hunt

    But what is meant by, terms like nitrate, ammonium, sulfate
  • Jul 29, 2009, 10:18 AM
    Unknown008

    Nitrate, like ammonium and sulfate are salts.

    Nitrate is , ammonium is and sulfate is .

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