Homework Answers
In this case the titration curve consists of two equivalence
point.
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Please refer to data set D
1. For each data set, the volume of acid being...
DETERMINATION OF MOLECULAR WEIGHT OF AN UNKNOWN DIPROTIC ACID Use Data Set to answer the followin...
DETERMINATION OF MOLECULAR WEIGHT OF AN UNKNOWN DIPROTIC ACID Use Data Set to answer the following questions 1. Using the data, sketch a titration curve for the titration of the acid with 0.1 M NaOH pH 0 volume of NaOH added 2. Using the first equivalence point, determine the molecular weight of the acid. Use the sequence of steps employed in the in-class exercise. Homework Molecular Weight of an Unknown Diprotic Acid 3. Using the second equivalence point, determine the...
Please refer to data set D do the following: 4. For the acid in Option_ drogen(s)...
Please refer to data set D
do the following: 4. For the acid in Option_ drogen(s) with an asterisk a) Draw a Lewis structure o (*). (Hint: Organic acids, tho "HO2C-" or "-CO2H" written in a lewis structure of the acid and mark the acidic hydropen(s) with an aster ceanic acids, those composed of C, H, and O. will have the partial structure -.CO2H" written in the formula. In these cases, both oxveens are bonded to the hon and the...
A Weak Acid - Strong Base Titration Report Sheet Date: Name: Volume of CH3COOH (ml): Sample...
A Weak Acid - Strong Base Titration Report Sheet Date: Name: Volume of CH3COOH (ml): Sample Code: { 10.00 mL Temperature: _22.0_ Initial Volume of NaOH (mL): 0.00 Molarity of NaOH (from label): _0.1013__ RUN 1 From LabQuest Titration Curve From 1st Derivative From Printed Titration Curve Instructor's Approval of LabQuest Data Volume of NaOH at Equivalence Pt (mL) 12.00mL 12.65mL Average Volume of NaOH at Equivalence Pt Include printed graphs of titration curve and 1st Derivation with Report Sheet...
Table I. Summary of Titration Data for H3PO4 Acid Titration Point Volume of NaOH added 0.00...
Table I. Summary of Titration Data for H3PO4 Acid Titration Point Volume of NaOH added 0.00 2.60 5.20 7.40 8.60 pH 2.22 2.38 Initial First Eq. Pt. First Eq. Pt. Second 2 Eq. Pt. Second Eq. Pt.4.64 2.80 3.17
1. Use the data given to calculate the following parts: a. Using your data for the...
1. Use the data given to calculate the following parts:
a. Using your data for the value for VEP1, calculate the
molarity of H3PO4 at the 1st equivalence point, EP1. Show work
clearly, with units and correct significant figures.
b. Using your data for the value for VEP2, calculate the
molarity of H3PO4 at the 2nd equivalence point, EP2. Show work
clearly, with units and correct significant figures.
c. Calculate the percent error between these two molarity
values, % error...
3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution...
3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M NaOH. a) What is the equivalence point volume and 2 equivalence point volume for this titration? Find the pH b) before the titration begins; c) after 20.00 mL of the NAOH has been added, d) after 62.50 mL of the NaOH has been added; and e) after 85.00 mL of the NAOH has been added. 4)...
The data for the titration of 25.00 mL of Unknown Acid Sample #80 with 0.1508 M...
The data for the titration of 25.00 mL of Unknown Acid
Sample #80 with 0.1508 M NaOH (aq) was
plotted on the graph below.
To help with your analysis we have summarized some of the key
numerical values that were determined from the original data -
using the methods on Page 13 of your lab manual to graphically
determine the equivalence point.
Unknown #27
Volume of NaOH added at the potentiometric endpoint (mL)
21.25 mL
Volume of NaOH added at...
1. The equivalence point of a weak, monoprotic acid with a volume of 22.00 mL was...
1. The equivalence point of a weak, monoprotic acid with a volume of 22.00 mL was reached after adding 22.10 mL of 0.1025 M NaOH(aq) and the pH at this volume was 8.91. The pH was 3.37 when the volume of NaOH(aq) added was 11.05 mL. What is the value of Ka for this unknown acid? 0.1025 0.1030 3.37 8.91 1.23 x 10-9 4.27 x 10-4 2. A solution of acetic acid, HC2H3O2, a weak monoprotic acid, was standardized by...
PROCESSING THE DATA 1. COMPLETE DATA TABLE 2. Determine the volume of NaQH added at the...
PROCESSING THE DATA 1. COMPLETE DATA TABLE 2. Determine the volume of NaQH added at the equivalence point. 3. Calculate the number of moles of NaOH used. 4. See the equation for the neutralization reaction given in the introduction. Determine the number of moles of HCl used. 5. Recall that you pipeted out 10.0 mL of the unknown HCl solution for the titration. Calculate the HCl concentration. Trail 1 Trial 2 Concentration of NaQH 0.1 M 0 ml NaQH volume...
After graphing the titration of a weak acid, a student determines that the equivalence volume is...
After graphing the titration of a weak acid, a student determines that the equivalence volume is 5.00 ml NaOH. Calculate the K, of the weak acid using the data table below. NaOH delivered pH (mL) 10.00 4.67 12.50 5.56 4.35 6.67 4.55 7.09 15.00 9.13 2.75 x 10-6 7.41x10-10 3.16 x 10-3 Not enough information is given to solve for ka
DETERMINATION OF MOLECULAR WEIGHT OF AN UNKNOWN DIPROTIC ACID Use Data Set to answer the following questions 1. Using the data, sketch a titration curve for the titration of the acid with 0.1 M NaOH pH 0 volume of NaOH added 2. Using the first equivalence point, determine the molecular weight of the acid. Use the sequence of steps employed in the in-class exercise. Homework Molecular Weight of an Unknown Diprotic Acid 3. Using the second equivalence point, determine the...
Please refer to data set D
do the following: 4. For the acid in Option_ drogen(s) with an asterisk a) Draw a Lewis structure o (*). (Hint: Organic acids, tho "HO2C-" or "-CO2H" written in a lewis structure of the acid and mark the acidic hydropen(s) with an aster ceanic acids, those composed of C, H, and O. will have the partial structure -.CO2H" written in the formula. In these cases, both oxveens are bonded to the hon and the...
A Weak Acid - Strong Base Titration Report Sheet Date: Name: Volume of CH3COOH (ml): Sample Code: { 10.00 mL Temperature: _22.0_ Initial Volume of NaOH (mL): 0.00 Molarity of NaOH (from label): _0.1013__ RUN 1 From LabQuest Titration Curve From 1st Derivative From Printed Titration Curve Instructor's Approval of LabQuest Data Volume of NaOH at Equivalence Pt (mL) 12.00mL 12.65mL Average Volume of NaOH at Equivalence Pt Include printed graphs of titration curve and 1st Derivation with Report Sheet...
Table I. Summary of Titration Data for H3PO4 Acid Titration Point Volume of NaOH added 0.00 2.60 5.20 7.40 8.60 pH 2.22 2.38 Initial First Eq. Pt. First Eq. Pt. Second 2 Eq. Pt. Second Eq. Pt.4.64 2.80 3.17
1. Use the data given to calculate the following parts:
a. Using your data for the value for VEP1, calculate the
molarity of H3PO4 at the 1st equivalence point, EP1. Show work
clearly, with units and correct significant figures.
b. Using your data for the value for VEP2, calculate the
molarity of H3PO4 at the 2nd equivalence point, EP2. Show work
clearly, with units and correct significant figures.
c. Calculate the percent error between these two molarity
values, % error...
3) A weak monoprotic acid has a pKa 6.15. 50.00 mL of an 0.1250M aqueous solution of this weak acid is titrated with 0.1000M NaOH. a) What is the equivalence point volume and 2 equivalence point volume for this titration? Find the pH b) before the titration begins; c) after 20.00 mL of the NAOH has been added, d) after 62.50 mL of the NaOH has been added; and e) after 85.00 mL of the NAOH has been added. 4)...
The data for the titration of 25.00 mL of Unknown Acid
Sample #80 with 0.1508 M NaOH (aq) was
plotted on the graph below.
To help with your analysis we have summarized some of the key
numerical values that were determined from the original data -
using the methods on Page 13 of your lab manual to graphically
determine the equivalence point.
Unknown #27
Volume of NaOH added at the potentiometric endpoint (mL)
21.25 mL
Volume of NaOH added at...
PROCESSING THE DATA 1. COMPLETE DATA TABLE 2. Determine the volume of NaQH added at the equivalence point. 3. Calculate the number of moles of NaOH used. 4. See the equation for the neutralization reaction given in the introduction. Determine the number of moles of HCl used. 5. Recall that you pipeted out 10.0 mL of the unknown HCl solution for the titration. Calculate the HCl concentration. Trail 1 Trial 2 Concentration of NaQH 0.1 M 0 ml NaQH volume...
After graphing the titration of a weak acid, a student determines that the equivalence volume is 5.00 ml NaOH. Calculate the K, of the weak acid using the data table below. NaOH delivered pH (mL) 10.00 4.67 12.50 5.56 4.35 6.67 4.55 7.09 15.00 9.13 2.75 x 10-6 7.41x10-10 3.16 x 10-3 Not enough information is given to solve for ka
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