Which of the following illustrates antacid activity? A) NaCl → Na⁺ + Cl^- B) HCl → H⁺ + Cl^- C) Mg(OH)2 + HCl → MgCl₂ + H₂O D) KCl → K⁺ + Cl^-

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The reaction between magnesium hydroxide and hydrochloric acid results in the formation of magnesium chloride and water. This neutralizes the acid and reduces the acidity in the stomach, making it an antacid activity. A and D are just dissociation reactions of salts, while B is the reaction of hydrochloric acid with an unknown substance.

Which of the Following Illustrates Antacid Activity