Final answer:
Magaldrate is an antacid but not listed among the products mentioned in the question. The products mentioned include antacids with active ingredients like calcium carbonate, aluminum hydroxide, and magnesium hydroxide which neutralize stomach acid through a chemical reaction.
Step-by-step explanation:
Magaldrate is an antacid that is used to treat symptoms caused by the excess stomach acid such as heartburn, indigestion, or an upset stomach. However, none of the products listed in the question (a. baking soda, b. Riopan, c. Amphojel, d. milk of magnesia, e. Tums, f. Gelusil, g. Alka Seltzer, h. Maalox, i. Rolaids, j. Gaviscon) are magaldrate antacids.
The active ingredients in some well-known antacids include calcium carbonate in Tums, aluminum hydroxide in Gaviscon, and magnesium hydroxide in Milk of Magnesia. These compounds react with stomach acid (HCl) in a neutralization reaction, such as in the reaction:
CaCO3(s) + 2HCl(aq) = CaCl₂(aq) + H₂O(l) + CO₂(g)
This reaction not only reduces the acidity of the stomach content but also can lead to the production of carbon dioxide gas, which may result in belching.