Problem 10.100 The daily output of stomach acid (gastric juices) is 1000 mL to 2

Question

Problem 10.100 The daily output of stomach acid (gastric juices) is 1000 mL to 2000 mL. Prior to a meal, stomach acid (HCI) typically has a pH of 1.42 Part A What is the H30 of stomach acid Express your answer to two significant figures and include the appropriate units. Value Units CH30 Submit My Answers Give U Part B One chewable tablet of the antacid Maalox contains 600. mg of CaCO3. Write the neutralization equation. Express your answer as a chemical equation. Identify all of the phases in your answer. My Answers Give Up Submit

Explanation / Answer

Part A

We know that

pH = -log[H3O+]

so
[H3O+] = 10^-1.42 = 3.80x10^-2 M (0.0380 moles/liter)
0.038 M (2 s.f.)

Part B
3HCl(aq) + Al(OH)3(s) --> AlCl3(aq) + 3H2O(l)


Part D

The neutralization equation is as below:-
2HCl(aq) + Mg(OH)2(s) --> MgCl2(aq) + 2H2O(l)

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