When someone takes an antacid to neutralize stomach acid, the antacid reacts with hydrochloric acid (HCl) to form various products. Let's analyze each of the given chemical equations to determine which ones show typical reactions between HCl and common components of antacids.
1. [tex]\( \text{HCl} + \text{NaOH} \rightarrow \text{NaCl} + \text{H}_2\text{O} \)[/tex]
- This equation shows hydrochloric acid reacting with sodium hydroxide, a strong base. Antacids often contain bases to neutralize acids.
- Correct
2. [tex]\( 2 \text{HCl} + \text{CaCO}_3 \rightarrow \text{CaCl}_2+ \text{CO}_2+ \text{H}_2\text{O} \)[/tex]
- This equation shows hydrochloric acid reacting with calcium carbonate. Calcium carbonate is a common ingredient in antacids.
- Correct
3. [tex]\( 2 \text{HCl} + \text{Mg(OH)}_2 \rightarrow \text{MgCl}_2+ 2 \text{H}_2\text{O} \)[/tex]
- This equation shows hydrochloric acid reacting with magnesium hydroxide. Magnesium hydroxide is also a common ingredient in antacids.
- Correct
4. [tex]\( 6 \text{HCl} + 2 \text{Al} \rightarrow 2 \text{AlCl}_3 + 3 \text{H}_2 \)[/tex]
- This equation shows hydrochloric acid reacting with aluminum. This reaction does not typically reflect the neutralization process that occurs with antacids (substances that typically neutralize acids, rather than metals).
- Not Correct
5. [tex]\( \text{HCl} + \text{NaHCO}_3 \rightarrow \text{NaCl} + \text{H}_2\text{O} + \text{CO}_2 \)[/tex]
- This equation shows hydrochloric acid reacting with sodium bicarbonate (baking soda), which is often used as an antacid due to its ability to neutralize stomach acid.
- Correct
So, the correct chemical equations that show reactions that occur when someone takes an antacid are:
1. [tex]\( \text{HCl} + \text{NaOH} \rightarrow \text{NaCl} + \text{H}_2\text{O} \)[/tex]
2. [tex]\( 2 \text{HCl} + \text{CaCO}_3 \rightarrow \text{CaCl}_2+ \text{CO}_2+ \text{H}_2\text{O} \)[/tex]
3. [tex]\( 2 \text{HCl} + \text{Mg(OH)}_2 \rightarrow \text{MgCl}_2+ 2 \text{H}_2\text{O} \)[/tex]
5. [tex]\( \text{HCl} + \text{NaHCO}_3 \rightarrow \text{NaCl} + \text{H}_2\text{O} + \text{CO}_2 \)[/tex]
