Chemistry help please :)?

Question

if u take calcium carbonate antacids such as tums or rolaids for an upset stomach due to hydrochloric acid build up, u are more likely to burp than if u take a magnesium hydroxide antacid such as milk of magnesia. why are you more likely to burp due to gas build up in the stomach if u use tums? write out the word equations for the two chemical reactions and compare the products.

Answer 1

When you use calcium carbonate (Tums, Rolaids, etc.):

CaCO3(s) + 2 HCl(aq) -------> CaCl2(aq) + H2O(l) + CO2(g)

When you use magnesium hydroxide (M.O.M, etc.)

Mg(OH)2(aq) + 2 HCl(aq) -------> MgCl2(aq) + 2 H2O(l)

Both products neutralize the gastric acid, but magnesium hydroxide does it without producing carbon dioxide gas as a by-product, so you burp less (or not at all).