Weak acid/strong base titration question: 21.80 mL of 0.1164 M NaOH (0.00253752 mol) is added to...
Weak acid/strong base titration question:
21.80 mL of 0.1164 M NaOH (0.00253752 mol) is added to 20.00 mL of
0.127 M unknown weak acid HA (0.00254 mol). The resultant pH is
7.57. I am trying to calculate the Ka without the
Henderson-Hasselbach equation but I cannot get an answer that
matches my other calculated Ka values. Please help.
Homework Answers
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Weak acid/strong base titration question:
21.80 mL of 0.1164 M NaOH (0.00253752 mol) is added to...
A 25.0 mL of a weak acid is titrated with a strong base (0.1 M). Calculate...
A 25.0 mL of a weak acid is titrated with a strong base (0.1 M). Calculate the pH of the solution during the titration if the weak acid concentration is 0.10 M and its Ka = 1.8 x 10-5 and 10.0 mL of base has been added. (Hint: use Henderson-Hasselbach equation). Question options: a) pH= 7.00 b) pH= 5.28 c) pH = 4.56 d) pH= 4.74
Part A: Calculating a Theoretical Titration Curve (Weak Acid - Strong Base) Consider the titration of...
Part A: Calculating a Theoretical Titration Curve (Weak Acid - Strong Base) Consider the titration of 50.00 mL of 0.05 M acetic acid with 0.1 M NaOH. Calculate the pH of the resulting solution at the following points during the titration (given as volume of NaOH added). Volume NaOH pH of analyte 0.00 15.00 20.00 24.00 24.50 mL at equivalence point 40.00
Titration of a weak acid (CH3COOH) and strong base (NaOH), the molarity of NaOH after titration...
Titration of a weak acid (CH3COOH) and strong base (NaOH), the
molarity of NaOH after titration = 0.167 M, I need help answering
to the blanks (Volume of base @ 1/2 equivalence point, pH @ 1/2
equivalence point, and pKa of the acid) on the following data
table,
11. Fill in the table below. Molarity of Acid 0.1204 M Volume of Acid 25.00 ml Volume of Base 17.959 ml Volume of Base @ 12 Equivalence Point pH @ 72 Equivalence...
A. Match each type of titration to its pH at the equivalence point. Weak acid, strong base Strong acid, strong base...
A. Match each type of titration to its pH at the equivalence point. Weak acid, strong base Strong acid, strong base Weak base, strong acid pH less than 7 pH equal to 7 pH greater than 7 B. A 56.0 mL volume of 0.25 M HBr is titrated with 0.50 M KOH. Calculate the pH after addition of 28.0 mL of KOH. C. Consider the titration of 50.0 mL of 0.20 M NH3 (Kb=1.8 x 10^-5) with 0.20 M HNO3....
5. What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of an aqueous w...
5. What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of an aqueous weak acid requires 29.80 mL of 0.0567 M NaOH? Ka = 3.2 x 10-4 for the weak acid.
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using...
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using the graph, determine the K, of the weak acid. 2. Suppose 100mL of the monoprotic acid referred to in the graph was titrated with 1M NaOH, determine the molarity of the weak acid. The corresponding balanced chemical equation is shown below. HA + NaOH + H2O + A + Nat 3. If the weak acid above was prepared by using 5g of the weak...
A student peforms a titration, titrating 25.00 mL of a weak monoprotic acid, HA, with a...
A student peforms a titration, titrating 25.00 mL of a weak monoprotic acid, HA, with a 1.22 M solution of NaOH. They collect data, plot a titration curve and determine the values given in the below table. ml NaOH added pH Half-way Point 18.34 4.06 Equivalence point 36.68 8.84 How many moles of NaOH have been added at the equivalence point? mol What is the total volume of the solution at the equivalence point? mL During the titration the following...
Question: In the figure below, titration curves for strong acid with strong base and weak acid...
Question: In the figure below, titration curves for strong acid
with strong base and weak acid with strong base are shown. Compare
the shapes of these curves early in the titration for three
different cases: titration of a strong acid, titration of a weak
acid with a lower pKa, and titration of a weak acid with a higher
pKa. Discuss with the class why the titration curve for weak acids
increase more rapidly early in the titration than do stronger...
Titration of weak acid with strong base pre-lab Answers can only be entered/graded between 2019-10-24 and...
Titration of weak acid with strong base pre-lab
Answers can only be entered/graded between 2019-10-24 and 2019-10-29 A student peforms a titration, titrating 25.00 mL of a weak monoprotic acid, HA, with a 1.12 M solution of NaOH. They collect data, plot a titration curve and determine the values given in the below table. ml NaOH PH added Half-way Point 17.97 3.66 Equivalence point 35.938.65 How many moles of NaOH have been added at the equivalence point? r mol correct...
2. Weak Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL...
2. Weak Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL of 0.100 M formic acid, HCHO2 (Ka 1.80 x 104) with 0.100 M N2OH. Calculate the pH for the following volumes of NaOH (0 mL, 10 mL, 25 mL, 40 mL, 50 mL, 55 mL, 60 mL). Volume of N2OH, in milliters pH (a) (b) (c) (d) (e) (f) (g) 0 10 25 40 50 55 60 pH at the equivalence point Specify your...
Part A: Calculating a Theoretical Titration Curve (Weak Acid - Strong Base) Consider the titration of 50.00 mL of 0.05 M acetic acid with 0.1 M NaOH. Calculate the pH of the resulting solution at the following points during the titration (given as volume of NaOH added). Volume NaOH pH of analyte 0.00 15.00 20.00 24.00 24.50 mL at equivalence point 40.00
Titration of a weak acid (CH3COOH) and strong base (NaOH), the
molarity of NaOH after titration = 0.167 M, I need help answering
to the blanks (Volume of base @ 1/2 equivalence point, pH @ 1/2
equivalence point, and pKa of the acid) on the following data
table,
11. Fill in the table below. Molarity of Acid 0.1204 M Volume of Acid 25.00 ml Volume of Base 17.959 ml Volume of Base @ 12 Equivalence Point pH @ 72 Equivalence...
5. What is the approximate pH at the equivalence point of a weak acid-strong base titration if 25 mL of an aqueous weak acid requires 29.80 mL of 0.0567 M NaOH? Ka = 3.2 x 10-4 for the weak acid.
Titration of a Weak Monoprotic Acid with a Strong Base Volume of Base (mL) 1. Using the graph, determine the K, of the weak acid. 2. Suppose 100mL of the monoprotic acid referred to in the graph was titrated with 1M NaOH, determine the molarity of the weak acid. The corresponding balanced chemical equation is shown below. HA + NaOH + H2O + A + Nat 3. If the weak acid above was prepared by using 5g of the weak...
Question: In the figure below, titration curves for strong acid
with strong base and weak acid with strong base are shown. Compare
the shapes of these curves early in the titration for three
different cases: titration of a strong acid, titration of a weak
acid with a lower pKa, and titration of a weak acid with a higher
pKa. Discuss with the class why the titration curve for weak acids
increase more rapidly early in the titration than do stronger...
Titration of weak acid with strong base pre-lab
Answers can only be entered/graded between 2019-10-24 and 2019-10-29 A student peforms a titration, titrating 25.00 mL of a weak monoprotic acid, HA, with a 1.12 M solution of NaOH. They collect data, plot a titration curve and determine the values given in the below table. ml NaOH PH added Half-way Point 17.97 3.66 Equivalence point 35.938.65 How many moles of NaOH have been added at the equivalence point? r mol correct...
2. Weak Acid versus Strong Base Derive a titration curve for the titration of 50.0 mL of 0.100 M formic acid, HCHO2 (Ka 1.80 x 104) with 0.100 M N2OH. Calculate the pH for the following volumes of NaOH (0 mL, 10 mL, 25 mL, 40 mL, 50 mL, 55 mL, 60 mL). Volume of N2OH, in milliters pH (a) (b) (c) (d) (e) (f) (g) 0 10 25 40 50 55 60 pH at the equivalence point Specify your...
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