Every antacid contains one or more ingredients capable of reacting with excess s

Question

Every antacid contains one or more ingredients capable of reacting with excess stomach acid (HCl). The essential neutralization products are CO2 and/or H2O. Write NET IONIC EQUATIONS to represent the neutralizing action of the following popular antacids. IDENTIFY ALL PHASES of the answer

1. Milk of magnesia (magnesium hydroxide)
2. Maalox (magnesium hydroxide, aluminum hydroxide)
3. Rolaids [NaAl(OH)2CO3]

Explanation / Answer

2. Mg(OH)2(s) + 2 H+(aq) --------> 2 H2O(l) + Mg++(aq) Al(OH)3(s) + 3 H+(aq) ----------> 3 H2O(l) + Al^+3(aq) 3. NaAl(OH)2CO3(s) + 3 H+(aq) ---------> 2 H2O(l) + CO2(g)

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