18mL of the diluted solution (S1) are transferred into a 250 ml beaker, then titrated with a solution of HCl of concentration C, = 0.018 mole/L. Using a pH-meter we follow the change of the pH of the mixture as a function of V. (the volume of acid added). The following results are tabulated: V, in ml 2 7 8.5 8.7 8.9 9.1 9.3 | 9.5 | 10 | 11 | 13 15 pH 12 11.8 11.6 11.3 11 10.5 | 10.2 9.2 7 5 4 3.7 3.2 2.7 2.4 | 2.3 2.1- Indicate a convenient glassware that must be used to : 2.1.1 - Withdraw the volume of solution S, . 2.1.2- Add HCI solution 2.2-Write the equation of the titration reaction, list its characteristics. 2.3- Plot the curve pH = f(Va) abscissa 1 cm 1 ml and ordinate 1cm 1 pH units 2.4- Determine graphically the coordinates of equivalence point

18mL of the diluted solution (S1) are transferred into a 250 ml beaker, then titrated with a solution of HCl of concentration C, = 0.018 mole/L. Using a pH-meter we follow the change of the pH of the mixture as a function of V. (the volume of acid added). The following results are tabulated: V, in ml 2 7 8.5 8.7 8.9 9.1 9.3 | 9.5 | 10 | 11 | 13 15 pH 12 11.8 11.6 11.3 11 10.5 | 10.2 9.2 7 5 4 3.7 3.2 2.7 2.4 | 2.3 2.1- Indicate a convenient glassware that must be used to : 2.1.1 - Withdraw the volume of solution S, . 2.1.2- Add HCI solution 2.2-Write the equation of the titration reaction, list its characteristics. 2.3- Plot the curve pH = f(Va) abscissa 1 cm 1 ml and ordinate 1cm 1 pH units 2.4- Determine graphically the coordinates of equivalence point

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Starting with 0.1 mol L−1 HNO2(aq), which one of the following operations would cause the pH of the…

Q: A 0.1-L unbuffered solution needs the pH adjusted from 3.5 to 2. How many microliters of a 12 molar…

A: pH is used to determine the concentration of hydronium ion.

Q: A solution is prepared that is initially 0.22M in nitrous acid (HNO,) and 0.49M in potassium nitrite…

Q: Each row of the table below describes an aqueous solution at 25 °C. The second column of the table…

Q: 22) A student prepares aqueous sodium benzoate by adding 3.78 g of solid benzoic acid to 12 mL of 3…

A: Percent recovery can be expressed as follows: Percent recovery = Amount of substabce…

Q: An analytical chemist is titrating 200.5 mL of a 0.3400M solution of hydrazoic acid (HN,) with a…

A: Here we use the Henderson Hasselbach equation,pH = pKa + log [Salt]/[Acid] Initial Acid = 200.5 x…

Q: If 24.6 mL of 0.053 M hydrochloric acid (HCI) solution is added to 22 mL of 0.144 M ammonia (NH3)…

A: Given : Concentration of HCl = 0.053 M Volume of HCl solution added = 24.6 mL = 0.0246 L…

Q: A 0.9600 M NaOH solution was diluted with a factor of 4. Then the diluted solution of NaOH was…

Q: Determine the pH at the point in the titration of 40.0 mL of 0.200 M H2NNH2 with 0.100 M HNO3 after…

A: Henderson's equations enable the calculation of the pH of buffer solutions prepared by mixing known…

Q: Suppose that a student is determining the total base content of an antacid tablet by performing a…

A: Given: Mass of tablet = 1.5312 g Mass of tablet dissolved = 0.3012 g Concentration of…

Q: A 44.6 mL of 0.103 M HCI is added to an antacid sample. The solution is titrated to a bromophenol…

A: Given, Volume of HCl = 44.6 mL = 0.0446 L (1mL = 0.001 L) Molarity of HCl = 0.103 M = 0.103 mol/L…

Q: An analytical chemist is titrating 206.5 mL of a 0.9600M solution of cyanic acid (HCNO) with a…

A: Given- Volume of HCNO= 206.5 mL Concentration of HCNO= 0.9600M Concentration of KOH=1.100M Volume…

Q: In a titration of 20.57 mL of 0.1653 M H2SO4, 45.41 mL of a NaOH solution are needed. What is the…

Q: An analytical chemist is titrating 170.2 mL of a 0.7700M solution of aniline (C,H,NH,) with a…

A: Weak base when titrated with strong acid below equivalence point acts as buffer solution as there…

Q: You have a 16 mL sample of acetylcholine (a neurotransmitter) with an unknown concentration and a pH…

Q: temine the concentration of a NaOH(ag) solution, s student titreted a 50. ml. sample with 0.10…

Q: Determine the pH of the resulting solution when the following two solutions are mixed: 50.0 mL of…

A: The given information is: Volume of HNO2 = 50ml = 0.050 L Concentration of HNO2 = 0.500 M Volume of…

Q: (b) If the titrant has a molarity of 0.1500 M and there are 40.00 mL of analyte present, what is the…

A: A titration curve of pH v/s volume of titrant added is provided.A diprotic acid say H2A is the…

Q: Calculate the pH of a solution containing a salt B Cl derived from a strong acid (HCl) and a weak…

A: The concentration of hydrogen ion in the salt solution is calculated as shown below where C is the…

Q: A solution is made with 554 ml of 8.21 M HX solution and 549 mL of 6.06 M Nax solution and the pH at…

Q: onsider exactly one litre of a propanoic acid buffer solution, containing 0.600 M C3H5OOH and 0.252…

A: If a strong acid is added in a buffer then it reacts with the conjugate base of the acid while if a…

Q: Use the pH scale to determine the factor of acidity and alkalinity between two pH values without…

A: pH is a scale to measure the concentration of hydrogen ions. The negative logarithm of hydrogen ion…

Q: An analytical chemist is titrating 243.9 mL of a 0.3300M solution of ammonia (NH,) with a 0.8900M…

A: The above-given problem can be solved using the Henderson-Hesselbalch equation. Given,pKb of ammonia…

Q: 2.500 g of an unknown achiral primary amine is dissolved in enough water to yield a 50.00 mL…

A: Given : mass of primary amine used = 2.500 g concentration of HCl used = 0.9250 M And volume of HCl…

Q: The pK, values for the dibasic base B are pKbl = 2.10 and pKb2 = 7.38. Calculate the pH at each of…

A: pkb1 = 2.10 pkb2 = 7.38 [B] = 0.95 M [HCl] = 0.95 M V = 50.0 mL

Q: Propionic acid, HC3H5O2, has a Ką value of 1.3 x 105. A buffer solution is prepared by mixing 20.0…

A: Given:- Propionic acid, HC3H502, has a Ką value of 1.3 x 10-5. A buffer solution is prepared by…

Q: For a titration to be effective, the reaction must be rapid and the yield of the reaction must…

A: Interpretation- Blanks in the sentences are to be filled with appropriate options.

Q: The ionization states of Phosphoric Acid are shown below: At a pH of 7.4 identify the relevant acid…

Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

100%

2) Titration of the diluted solution with hydrochloric acid
18ml of the diluted solution (S,) are transferred into a 250 ml beaker, then titrated with a solution of HCl of
concentration C, = 0.018 mole/L. Using a pH-meter we follow the change of the pH of the mixture as a function of V.
(the volume of acid added). The following results are tabulated:
V, in ml
2
5
7
8
8.5
8.7
8.9
9.
9.1
9.3
9.5
10
11
13
15
pH
12
11.8
11.6
11.3
11
10.5 10.2 | 9.2
7
4
3.7 3.2
2.7 2.4 | 2.3
2.1- Indicate a convenient glassware that must be used to :
2.1.1 - Withdraw the volume of solution S, .
2.1.2- Add HCI solution
2.2-Write the equation of the titration reaction, list its characteristics.
2.3- Plot the curve pH = f(Va)
abscissa 1 cm 1 ml and
ordinate 1cm 1 pH units
2.4- Determine graphically the coordinates of equivalence point
2.5- Based on the chemical species present in the beaker, justify the value of the pH at equivalence point.
2.6- Determine the molar concentration of solution (S,).
2.7- Deduce the concentration of (S.).
2.8- Find the relation between PH, Va, Vb, Ca, Cs and Vwater added after the equivalence.
2.9-To achieve a more rapid determination of the PH at equivalence, we could perform a colorimetric assay.
Specify the best indicator to choose from those listed in the table below:
indicator
PH range of color change
belianthin
3,1 - 4,4
bromothymol blue
6 -7,6
Cresol red
7,2 - 8,8

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Convenient glassware:

VIEW

Equation of titration reaction:

VIEW

Graph

VIEW

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

1. the temperature for each solution is carried out at approximately 297 K where Kw = 1.00 x 10 ^-14 (a) 0.20 g of hydrogen chloride (HCl) is dissolved in water to make 4.5 L of solution. What is the pH of the resulting hydrochloric acid solution? (b) 0.70 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 3.0 L of solution. What is the pH of this solution ?
Lemon juice contains citric acid which is tribasic(H3Y). 25cm^3 of lemon juice was diluted to 250cm^3. 25cm^3 of the solution was neutralized by 15cm^3 of 0.1M sodium hydroxide. a) Calculate; i) concentration of the diluted solution of lemon juice ii) concentration of the original lemon juice. iii) percentage by mass of citric acid in lemon juice.
An analytical chemist is titrating 143.6 mL of a 0.7000M solution of piperidine (C,H10NH) with a 0.4000M solution of HNO3. The p K, of piperidine is 2.89. Calculate the pH of the base solution after the chemist has added 267.7 mL of the HNO, solution to it. Note for advanced students: you may assume the final volume equals the initial volume of the solution plus the volume of HNO, solution added. Round your answer to 2 decimal places. pH
-2 What volume in milliliters of 9.850 x 10 M sodium hydroxide solution is required to reach the equivalence point in the complete titration of a 14.0 mL sample of 0.144 M phosphoric acid? Express your answer using three significant figures.
NaOH: 0.100 M Molarities of Solutions HCI: 0.1007 C2H3O2: 0.1005 M M-HC2H3O2: Part 1 - Titration of Hydrochloric Acid becubong ovisnotsuite griau bloe piles to solar mob of Using your titration curve, what is the mL base needed to reach the equivalence point? CORDAS Jag tog nolluloa bien ne bs agnied bio 25 nulov aumey He To Joig leciiaste axem uov umLoitsu (A clients es wolle ndog conalovispa en bron Han qe For each point shown below in the titration, record your measured pH from your data, then calculate the pH of the solution. Show your work for all calculations in the space provided. fomento orfT [HC1] = [H+] anos evig illw blos Acow a bris (10moq nobsilit 1. What was the pH of the hydrochloric acid before any base was added? -log[H+] = -log[0.1007] Measured pH = 4.1 pH = -log [H+] where [HCI] = [H+] Calculated pH: = 1.0 06 Hq =0.99697 ~1.0 2. What was the pH after 10.0 mL of sodium hydroxide solution was added? Measured pH = 1.3 Volume of HCI solution in liters: 002 0.01 net Um L…
A titration system is set up as follows: the bottom flask contains a sample solution of 50.0-mL 0.50 M C2H3NH2 (ethylamine), the burette is filled with 0.20 M HCl as titrant. Kb of C2H3NH2 = 6.5 ´ 10-4 What is the initial pH of above sample solution before titration starts?
A solution is prepared at 25 °C that is initially 0.29M in chloroacetic acid (HCH,CICO,), a weak acid with K,=1.3 × 10 and 0.34M in sodium chloroacetate (NaCH,CICO,). Calculate the pH of the solution. Round your answer to 2 decimal places. pH = 0 ?
A 20.00-mL sample contains 1.00 g of NAHCO,. This sample is used to standardize an NaOH solution. At the equivalence point, 39.60 mL of NaÓH have been added. K,(HCO, ) = 4.8 x 10 Indicators that change color within the pH range: bromothymol blue = 6.0 – 7.7 phenolphthalein = 8.3 – 9.8 alizarin yellow R = 10.0 – 12.0 a. What was the concentration of the NaOH? Concentration M b. What is the pH at the equivalence point? pH = c. Which indicator, bromothymol blue, phenolphthalein, or alizarin yellow R, should be used in the titration? bromothymol blue phenolphthalein allzarin yellow R y Another Version 10 item attempts remaining
The table has data from the titration of four 10.0 mL samples of a solution containing hydrochloric acid, HCl(aq), using a 0.299 mol/L sodium hydroxide standard solution. Titration of 10.0 mL HCl(aq) with 0.299 mol/L NaOH(aq) Trial #1 #2 #3 #4 final burette reading (mL) 17.9 35.0 22.9 40.1 initial burette reading (mL) 0.3 17.9 5.9 22.9 volume of NaOH(aq) added (mL) colour at endpoint blue green green green a) Select the most consistent trials and calculate the average volume of titrantadded.b) Calculate the concentration of the hydrochloric acid solution.
A chemist titrates 160.0 mL of a 0.3445 M pyridine (C-H5N) solution with 0.8552M HNO3 solution at 25 °C. Calculate the pH at equivalence. The pK, of pyridine is 8.77. 6 Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HNO3 solution added. E pH = 0 X 5 OL 9 L
5:51 1 .ll LTE Search Question 16 of 20 Submit Determine the pH at the point in the titration of 40.0 mL of 0.200 M H2NNH, with 0.100 M HNO3 after 80.0 mL of the strong acid has been added. The value of Kb for H2NNH2 is 3.0 x 10-6. 1 2 4 Based on the result of the acid-base reaction, set up the unknown. ICE table in order to determine the H2NNH3*(at H2O(1) =H;O*(aq) H2NNH2(aq + Initial (M) Change (M) Equilibrium (M) RESET 0.100 0.200 0.0333 0.0667 +x -X 0.100 + x 0.100 - x 0.200 + x 0.200 - x 0.0333 + x 0.0333 - x 0.0667 + x 0.0667 - x www
Question Completion Status: QUESTION 3 3. A weak acid was titrated using 0.20 M KOH. The pH at several volumes added was recorded and plotted as shown below. If 175 mg of the weak acid was used, what was the molar mass of the weak acid solution? pH vs Volume of KOH(aq) 13 12 11 10 6. 7. 6. 4. 3 4 5 6 8 9 10 mL KOH(aq) QUESTION 4