1) Suppose that, instead of using NaOH, a base such as Ba(OH)2 had been used. What changes in the calculations would then have to be done to determine the molar concentrations of the base? Answer this question in words, and illustrate your answer by calculating molarity from the following data: mol KHP used 0.040 mol Ba(OH)2 Initial buret level = 0.020 mL Final buret level 36.70 mL

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter14: Acids And Bases
Section: Chapter Questions
Problem 127QRT
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Post-Lab Studies:
1) Suppose that, instead of using NaOH, a base such as Ba(OH)2 had been used. What changes in the
calculations would then have to be done to determine the molar concentrations of the base?
Answer this question in words, and illustrate your answer by calculating molarity from the
following data:
mol KHP used 0.040 mol
Ba(OH)2 Initial buret level = 0.020 mL
Final buret level 36.70 mL
2) In section C, Selection of Proper Indicator(s):
a) What is the reason of getting different end points (Vph#Vbg#Vbth)?
b) After adding bromocresol green to 0.0010 M NaOH, what color did you observe? Explain the
color change by relating the pH of the solution.
Transcribed Image Text:Post-Lab Studies: 1) Suppose that, instead of using NaOH, a base such as Ba(OH)2 had been used. What changes in the calculations would then have to be done to determine the molar concentrations of the base? Answer this question in words, and illustrate your answer by calculating molarity from the following data: mol KHP used 0.040 mol Ba(OH)2 Initial buret level = 0.020 mL Final buret level 36.70 mL 2) In section C, Selection of Proper Indicator(s): a) What is the reason of getting different end points (Vph#Vbg#Vbth)? b) After adding bromocresol green to 0.0010 M NaOH, what color did you observe? Explain the color change by relating the pH of the solution.
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