Which chemicals in the table above act as a buffer? Support your claim using what you know about buffers and how they work. Table 1: Composition of minimal media.The listed quantities are for 1 L of media.Media AMedia BChemical(Original)(New)6.8 g13.6 gN22HPO4KH2PO43g0.5g18NaCI0.25 g0.5 gMgSO4 • 7H20(NH4)2SO41g1gd-Glucose3 g38Trace metals0.5 mL0.5 mLsolution1 mL1 mLVitamins

Answered: Which chemicals in the table above act…

Which chemicals in the table above act as a buffer? Support your claim using what you know about buffers and how they work.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter11: Properties Of Solutions

Section: Chapter Questions

Problem 109AE: Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray...

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Concept explainers

Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Which chemicals in the table above act as a buffer? Support your claim using what you know about buffers and how they work.

Table 1: Composition of minimal media.
The listed quantities are for 1 L of media.
Media A
Media B
Chemical
(Original)
(New)
6.8 g
13.6 g
N22HPO4
KH2PO4
3g
0.5g
18
NaCI
0.25 g
0.5 g
MgSO4 • 7H20
(NH4)2SO4
1g
1g
d-Glucose
3 g
38
Trace metals
0.5 mL
0.5 mL
solution
1 mL
1 mL
Vitamins

Expert Solution

Step 1

An aqueous solution which contain a mixture of weak acid and its conjugate base or vice versa is called a buffer solution. Usually buffer solutions are used for keeping pH nearly at constant value.

The buffer solutions are work by neutralizing any added acid or base to maintain the pH of the solution relatively stable. Such conditions are very important for reactions that requires specific and stable pH ranges.

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