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I think it reduces the concentration as H+ ions attach to the Carbonate radicals. H+ ( whatever ele n the stomach like OH- ) radicals from water.>> H+ & OH- + Ca+ & CO3 will give CaOH + H2CO3 I think!!>> WATER + CalciumCarbonate = Calcium Hydroxide and HydrogenCarbonate H2O + CaCO3 = CaOH + H2CO3 or something like that. I know the above equation is NOT balanced.

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15y ago
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10y ago

The Lewis definition of a base is an electron pair donor. An acid (eg H+) is an electron acceptor.

Baking soda is sodium bicarbonate. Sodium is a spectator ion (it does nothing) so ignore it. Bicarbonate has formula:

O-COOH

The negative oxygen atom has 3 lone pairs AND has negative charge, so it is a good electron donor. It thus reacts with H+ in the stomach to form:

HOCOOH

So the bicarbonate is snatching up H+. The acidity of the stomach will decease (increase alkalinity). The pH will therefore increase to a number greater than 4. The amount it increases would depend on the amount of bicarbonate added.

If the Lewis definition is too confusing, the Bronsted-Lowry definition is also applicable. Acid = proton donor (H+), base = proton acceptor.

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Q: The effect of baking soda on H ion concentration in stomach content?
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