Be sure to answer all parts.A microbiologist is preparing a medium on which to culture E. coli bacteria. She buffers the medium atpH 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aqueoussolutions of K₂HPO4 and KH₂PO4 must she combine to make 450.0 mL of the pH 7.00 buffer?Ka values for phosphoric acid:Kal = 7.2 × 10-3Ka2= 6.3 × 10-8Ka3 = 4.2 × 10-13Volume H₂PO4 =Volume HPO42=mLmL

Given pH = 7She want to make 450 mL of pH We have to find volume of equimolar mixtures of H2 and…

sure to answer all parts. nicrobiologist is preparing a medium on which to culture E. coli bacteria. She buffers the med € 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aque utions of K₂HPO4 and KH₂PO4 must she combine to make 450.0 mL of the pH 7.00 buffer? values for phosphoric acid: = 7.2 × 10-³

sure to answer all parts. nicrobiologist is preparing a medium on which to culture E. coli bacteria. She buffers the med € 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aque utions of K₂HPO4 and KH₂PO4 must she combine to make 450.0 mL of the pH 7.00 buffer? values for phosphoric acid: = 7.2 × 10-³

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

Be sure to answer all parts.
A microbiologist is preparing a medium on which to culture E. coli bacteria. She buffers the medium at
pH 7.00 to minimize the effect of acid-producing fermentation. What volumes of equimolar aqueous
solutions of K₂HPO4 and KH₂PO4 must she combine to make 450.0 mL of the pH 7.00 buffer?
Ka values for phosphoric acid:
Kal = 7.2 × 10-3
Ka2= 6.3 × 10-8
Ka3 = 4.2 × 10-13
Volume H₂PO4 =
Volume HPO42
=
mL
mL

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