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    identifying baking soda and washing soda

    Asked Dec 11, 2006, 06:05 PM 2 Answers
    Using a monoprotic acid, how would you find out which sample is baking soda and which sample is washing soda if you have unknown samples of each? I think it has something to do with how much CO2 each produces when reacted with the acid, but I don't know which produces more CO2 and which produces less. Could you also show me the reaction of each with the acid HA?

    Edit: I need help on the chemical equation

    Thank You

    Last edited by sumdumbum987; Dec 12, 2006 at 12:31 PM.
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    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    Dec 12, 2006, 12:36 AM
    Washing Soda = Na2CO3
    Baking soda = NaHCO3

    Write equations and balance them and see what you get :)
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    pwd77's Avatar
    pwd77 Posts: 185, Reputation: 3
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    #3

    Dec 12, 2006, 09:42 PM
    NaHCO3 + HA -> NaA + H2O + CO2 1 mole acid -> 1 mole CO2
    (Na)2CO3 + 2HA -> 2NaA + H2O + CO2 1 mole acid -> 1/2 mole CO2

    For the same weight of each, an aliquot of acid will yield half as much CO2 with washing as with baking soda
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