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People take antacids, such as milk of magnesia, to reduce the discomfort of acid stomach
Chapter 14, Problem 97P(choose chapter or problem)
Problem 97P
People take antacids, such as milk of magnesia, to reduce the discomfort of acid stomach or heartburn. The recommended dose of milk of magnesia is 1 teaspoon, which contains 400 mg of Mg(OH)2. What volume of HCl solution with a pH of 1.1 can be neutralized by 1 dose of milk of magnesia? (Assume two significant figures in your calculations.)
Questions & Answers
QUESTION:
Problem 97P
People take antacids, such as milk of magnesia, to reduce the discomfort of acid stomach or heartburn. The recommended dose of milk of magnesia is 1 teaspoon, which contains 400 mg of Mg(OH)2. What volume of HCl solution with a pH of 1.1 can be neutralized by 1 dose of milk of magnesia? (Assume two significant figures in your calculations.)
ANSWER:
Solution 97P:
Here, we are going to calculate the volume HCl required to neutralize 1 dose of milk of magnesia.
Step 1:
We know,
pH = -log [H+]
= 10-pH = 10-1.1
= 0.0794 M = 0.0794 mol/L