the main acid in the stomach is hydrochloric acid (hcl). which chemical equations show a reaction that…
the main acid in the stomach is hydrochloric acid (hcl). which chemical equations show a reaction that occurs when someone takes an antacid? check all that apply.\nhcl + naoh → nacl + h₂o\n2hcl + caco₃ → cacl₂ + co₂ + h₂o\n2hcl + mg(oh)₂ → mgcl₂ + 2h₂o\n6hcl + 2al → 2alcl₃ + 3h₂\nhcl + nahco₃ → nacl + h₂o + co₂
Answer
Explanation:
Step1: Understand antacid reactions
Antacids are bases or basic - salts that react with stomach acid (HCl) to neutralize it.
Step2: Analyze each equation
- $\mathrm{HCl}+\mathrm{NaOH}\rightarrow\mathrm{NaCl}+\mathrm{H}_2\mathrm{O}$: $\mathrm{NaOH}$ is a strong base but not a common antacid as it is too caustic.
- $2\mathrm{HCl}+\mathrm{CaCO}_3\rightarrow\mathrm{CaCl}_2+\mathrm{CO}_2+\mathrm{H}_2\mathrm{O}$: $\mathrm{CaCO}_3$ (calcium carbonate) is a common antacid. The reaction neutralizes HCl.
- $2\mathrm{HCl}+\mathrm{Mg(OH)}_2\rightarrow\mathrm{MgCl}_2 + 2\mathrm{H}_2\mathrm{O}$: $\mathrm{Mg(OH)}_2$ (magnesium hydroxide) is a common antacid and reacts with HCl to neutralize it.
- $6\mathrm{HCl}+2\mathrm{Al}\rightarrow2\mathrm{AlCl}_3+3\mathrm{H}_2$: This is a metal - acid reaction, not an antacid - acid reaction.
- $\mathrm{HCl}+\mathrm{NaHCO}_3\rightarrow\mathrm{NaCl}+\mathrm{H}_2\mathrm{O}+\mathrm{CO}_2$: $\mathrm{NaHCO}_3$ (sodium bicarbonate) is a common antacid and reacts with HCl to neutralize it.
Answer:
$2\mathrm{HCl}+\mathrm{CaCO}_3\rightarrow\mathrm{CaCl}_2+\mathrm{CO}_2+\mathrm{H}_2\mathrm{O}$, $2\mathrm{HCl}+\mathrm{Mg(OH)}_2\rightarrow\mathrm{MgCl}_2 + 2\mathrm{H}_2\mathrm{O}$, $\mathrm{HCl}+\mathrm{NaHCO}_3\rightarrow\mathrm{NaCl}+\mathrm{H}_2\mathrm{O}+\mathrm{CO}_2$