WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 2, Problem 8SA
Summary Introduction

To describe:

The advantages of stomach pH and one potential problem associated with it.

Introduction:

pH refers to the measurement of the basicity or acidity of aqueous or other liquid solutions in terms of numbers. The conversion of the hydrogen ion concentration's values, which typically range between 0 and 14 and between 1 and 1014 gram-equivalents per liters.

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In a hospital laboratory, a 10.0 mL sample of gastric juice, obtained several hours after a meal, was titrated with 0.01 M NaOH to neutral pH of 7.0; 72.0 mL of NaOH was required for this titration. The patient’s stomach contained no ingested food or drink, thus assume that no buffers were present. What was the pH of the 10.0 mL gastric juice sample before titrating with NaOH?
Which statement below is false about the probability of the absorption of a weak base from the following data? pka 4.5, stomach pH 2.5, small intestine pH 7.5. O the substance will be mostly ionized in stomach O the substance will be mostly non-ionized in the intestine the substance can be absorbed both in stomach and small intestine O the ratio of ionized and non-ionized substance will not favor absorption in stomach the ratio of ionized and non-ionized substance will favor absorption in intestine
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