I need an equation for the neutralization of lemon juice (citric acid) with baking soda (sodium hydrogen or sodium bicarbonate) that shows a proton transfer to form carbonic acid and a salt..And an equation for the decomposition of carbonic acid to water and carbon dioxide..And an equation for the neutralization of vinegar. Please help

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asked by Norma
  1. I don't intend to try and draw citric acid nor to use the correct formula. Here is a site to show you what citric acid looks like. Note it has three (3) -COOH groups on it and all of those are the acid part of citric acid. So I will simply write H3C for citric acid (the H3 stands for the 3 acidic hydrogen ions and C stands for the rest of the molecule.).
    H3C + 3NaHCO3 ==> Na3C + 3H2CO3
    (Note sodium bicarbonate is NaHCO3 which is baking soda. Baking soda is NOT NaOH). The salt is Na3C (sodium citrate) and H2CO3 is carbonic acid. That decomposes as follows:
    H2CO3 --> H2O + CO2

    You can draw on a sheet of paper (and I can't on the board) so you may want to show it this way.
    R(COOH)3 + 3NaHCO3 ==> R(COONa)3 + H2CO3 where the COOH is clearly the acid part and R stands for the rest of the molecule. However, if your prof wants more than that, you can use the structure from the site.\
    Vinegar is CH3COOH and the right hand H is acidic.
    CH3COOH + NaOH==> CH3COONa + HOH

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    posted by DrBob222
  2. Thank you so much Dr. Bob

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    posted by Norma

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