ANSWER BI AND ANY OTHER THREE QUESTIONSSECTION DQuestion B1One way to delermine the pKa value is by use ofa pli curve. One student used thie pH curveto determine thc pka value of the weak monoprotic acid. She transferred25.0 cm' of0.100 M solution of the acid into a conical flask and measured the pll of the acid solutionusing a pH mcter accurate to one decimal place. A solution of sodium hydroxide ofconcentration 0.100 mol dni was added from the burette in small portions until the alkaliwas present in excess. The pH of the mixture was recorded after each addition of the sodiumhydroxide solution. Then she plotted the pH of the solution versus volume of alkali addedfrom the burette and used this graph to determine the acid dissociation constant.141210-1020304050VNaOH (ml)a) Calculate mass of the acid required to prepare 100 cm' of 0.1 solution of thisacid.(Molar mass of the acid 150 g mol)b) What is the volume of sodium hydroxide added at cquivalence point?c) What is the pH of the solution when half of the acid is neutralisedd) What is the pKa of the acid? Show all your calculationsc) Explain why pH changes slowly between point A and R

Solution: a) here we have to prepare 100 mL of 0.1 M acid solution. given molar mass of acid is…

Answered: ) Calculate mass of the acid required…

) Calculate mass of the acid required to prepare 100 cm' of 0.1 solution of this acid.(Molar mass of the acid 150 g mol) 5) What is the volume of sodium hydroxide added at equivalence point?

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter15: Solutions Of Acids And Bases

Section: Chapter Questions

Problem 15.130QE: A solution is made by dissolving 15.0 g sodium hydroxide in approximately 450 mL water. The solution...

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Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

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Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

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