None 2. Determine a recipe to prepare 200 mL of 20 mM phosphate buffer, pH 6.6, from 0.5 M starting stocksolutions.ml of 0.5 M Na2HPO4 (A)ml of 0.5 M NaH2PO4 (HA)Bring to 150 ml with deionized H₂O-110.instructions

Step 1: Step 2: Step 3: Step 4:

Answered: 2. Determine a recipe to prepare 200 mL…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter14: Principles Of Neutralization Titrations

Section: Chapter Questions

Problem 14.38QAP

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If a 0.3 M solution of NaOH was used to titrate 100 mL of 0.3 M solution of CH3COOH (Ka =1.8 x 10 -5) and the following volumes of NaOH were recorded: 102, 97, 99, 98, 101, 106 mL. The pH Value is………………when added 99.0 mL of 0.3 M NaOH The pH of the solution at the equivalence point more than 7 Because................................... Calculate the 99% confidence limits of the mean? And use them to decide whether there is any evidence of systematic error? [ hints: For N=6 and the 99 % confidence interval, the value of t is 4.03].
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2. Determine a recipe to prepare 200 mL of 20 mM phosphate buffer, pH 6.6, from 0.5 M starting stock solutions. ml of 0.5 M Na2HPO4 (A) ml of 0.5 M NaH2PO4 (HA) Bring to 150 ml with deionized H₂O -110. instructions