Homework Answers
Answer1. This plot shows titration of weak acid nd strong base.
The region B here shows : before equivalence
The point C shows: equivalence point
The region D shows: after equivalence
The point B shows halfway point of buffer region ( before equivalence) where, ph = 1/2 pKa. so, It shows pKa of the weak acid.
The correct option is E
Answer -2 Since, it is a tritration of weak acid and strong base, At equivalence point, the weak acid is neutralized by the strong base and gets converted into its conjugate base. As it is a weak acid, the pH will be dominated by strong base and as we know the pH of the base is more than 7. So, at equivalence point the solution will be basic.
The correct option is: C)
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A weak acid is titrated with a strong base and the pH vs. volume plot is...
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....
24A) 40mL of 0.2 M formic acid is titrated with a strong base (NaOH= 0.5 M). Determine the pH before any base has been...
24A) 40mL of 0.2 M formic acid is titrated with a strong base
(NaOH= 0.5 M). Determine the pH before any base has been added.
Please show steps and please explain why the answer is what it
is.
24B) The 40mL 0.2 M formic acid is titrated with a 6.0mL of
strong base. Here NaOH can be treated as a conjugate base and
formic acid is the acid.
please show steps and explain!
Us (24-25, Acid/base, aqueous equilibrium) 24A) (4...
Prepare a titration curve (pH vs. equivalents strong base added if you choose a weak acid...
Prepare a titration curve (pH vs. equivalents strong base added if you choose a weak acid to be titrated) in which you plot at least 10 data points starting from 0-equiv added to 1 equiv added. Show how you can obtain the pKa for this acid from the plot. You can also choose a weak base to be titrated with strong acid. Use Excel for the calculations and for plotting. Show the calculations for how you obtained the pH at...
What is the shape of the titration curve (plot of pH vs. mL of added base)...
What is the shape of the titration curve (plot of pH vs. mL of added base) for titration of a weak acid by a strong base? In a titration, 10 mL of 0.10 M HF was titrated with 0.20 M KOH. Calculate the pH of the resulting solution after the addition of the following volumes of base: 0 mL, 2.5 mL, 5.0 mL, and 6.0mL. What volume of base is needed to reach the equivalence point? What species is present...
Titration of Weak Acid with Strong Base A certain weak acid, HA, with a Ka Value of 5.61 *10^-6, is titrated wit...
Titration of Weak Acid with Strong Base A certain weak acid, HA, with a Ka Value of 5.61 *10^-6, is titrated with NaOH. PART A A solution is made by mixing 8.00 mmol(millimoles) of HA and 1.00 mmol of the strong base. What is the resulting pH? express the pH numerically to two decimal places. pH = ? PART B More strong base is added until the equicalence point is reached. What is the pH of this solution at the...
When a weak acid is titrated with a strong base, if the pH at the half-equivalence...
When a weak acid is titrated with a strong base, if the pH at the half-equivalence point is 6.04, what is the Ka of the acid?
In the titration of a weak acid (HA) with a strong base, at what added volume...
In the titration of a weak acid (HA) with a strong base, at what added volume of titrant (V) is the maximum buffer capacity reached? Ve represents the volume at the equivalence point of the titration.
α= 0.0 6. Sketch a plot below of a titration curve (pH vs volume of NaOH) when 25 mL of a 0.10N w...
please help me plot/ and draw the curve (ph, pka, and
equivalence ph value)
α= 0.0 6. Sketch a plot below of a titration curve (pH vs volume of NaOH) when 25 mL of a 0.10N weak acid HA (Ka 1.00 X 10 is titrated with 0.10N strong base NaOH Indicate on the plot the initial pH, pha, 10% and 90% equivalence, equivalence, and final pH yalues.
α= 0.0 6. Sketch a plot below of a titration curve (pH vs...
Consider the curve shown here for the titration of a weak base with a strong acid and answer each question.
Consider the curve shown here for the titration of a weak base with a strong acid and answer each question. a. What is the pH and what is the volume of added acid at the equivalence point? b. At what volume of added acid is the pH calculated by working an equilibrium problem based on the initial concentration and Ks of the weak base? c. At what volume of added acid does pH = 14 - pka ? d. At what volume of added...
Using the following pH curve for the titration of a weak acid with a strong base,...
Using the following pH curve for the titration of a weak acid with a strong base, if the pH at half-equivalence point is 4.75, what is the Ka of the weak acid? Equivalence Point Half-equivalence Point - 8 12 14 Volume of base added (in ml) 20 1.78 x 10-4 1.77 x 10-4 1.77 x 10-5 1.78 x 10-5
24A) 40mL of 0.2 M formic acid is titrated with a strong base
(NaOH= 0.5 M). Determine the pH before any base has been added.
Please show steps and please explain why the answer is what it
is.
24B) The 40mL 0.2 M formic acid is titrated with a 6.0mL of
strong base. Here NaOH can be treated as a conjugate base and
formic acid is the acid.
please show steps and explain!
Us (24-25, Acid/base, aqueous equilibrium) 24A) (4...
Prepare a titration curve (pH vs. equivalents strong base added if you choose a weak acid to be titrated) in which you plot at least 10 data points starting from 0-equiv added to 1 equiv added. Show how you can obtain the pKa for this acid from the plot. You can also choose a weak base to be titrated with strong acid. Use Excel for the calculations and for plotting. Show the calculations for how you obtained the pH at...
In the titration of a weak acid (HA) with a strong base, at what added volume of titrant (V) is the maximum buffer capacity reached? Ve represents the volume at the equivalence point of the titration.
please help me plot/ and draw the curve (ph, pka, and
equivalence ph value)
α= 0.0 6. Sketch a plot below of a titration curve (pH vs volume of NaOH) when 25 mL of a 0.10N weak acid HA (Ka 1.00 X 10 is titrated with 0.10N strong base NaOH Indicate on the plot the initial pH, pha, 10% and 90% equivalence, equivalence, and final pH yalues.
α= 0.0 6. Sketch a plot below of a titration curve (pH vs...
Using the following pH curve for the titration of a weak acid with a strong base, if the pH at half-equivalence point is 4.75, what is the Ka of the weak acid? Equivalence Point Half-equivalence Point - 8 12 14 Volume of base added (in ml) 20 1.78 x 10-4 1.77 x 10-4 1.77 x 10-5 1.78 x 10-5
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