Which of the following scenario will lead into LOSS of yield? a. Use of a filter paper with a smaller pore size b. Addition of excess H2SO4 c. Prolonged mixing while heating Cu(OH)2. d. Dcanting liquid from CuO suspension without filter paper In the absence of sodium hydroxide, which of the following substances can you use as the titrant to proceed with the experiment? a. Ammonia b. Potassium hydrogen phthalate c. Potassium hydroxide d. None of the above In the case of over-titration, what should be done to the sample? Add acid to revert the color back to faint pink or colorless b. Discard and prepare another sample c. Add more phenolphthalein indicator а.

Which of the following scenario will lead into LOSS of yield? a. Use of a filter paper with a smaller pore size b. Addition of excess H2SO4 c. Prolonged mixing while heating Cu(OH)2. d. Dcanting liquid from CuO suspension without filter paper In the absence of sodium hydroxide, which of the following substances can you use as the titrant to proceed with the experiment? a. Ammonia b. Potassium hydrogen phthalate c. Potassium hydroxide d. None of the above In the case of over-titration, what should be done to the sample? Add acid to revert the color back to faint pink or colorless b. Discard and prepare another sample c. Add more phenolphthalein indicator а.

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter17: Complexation And Precipitation Reactions And Titrations

Section: Chapter Questions

Problem 17.35QAP

See similar textbooks

Similar questions

A 65.0-mL sample of 0.010 M Pb(NO3)2 was added to a beaker containing 40.0 mL of 0.035 M KCl. Will a precipitate form?
Without doing detailed calculations, sketch the curve for the titration of 30.0 mL of 0.10 M NaOH with 0.10 M HCl. Indicate the approximate pH at the beginning of the titration and at the equivalence point. What is the total solution volume at the equivalence point?
11. A 0.485 g sample containing chloride was titrated with 36.8 mL of 0.1060 M AgNO3 stock solution. Express the results of this analysis in:a) Percent by weight of Clb) Weight percent Cl2c) Percent by weight of CaCl2d) Weight percent of AlC13
A. Separation of Ni²+ and Fe³+ from Zn²+ and Al³+ B. Test for Iron(III) Ion 17b 13b 11 11f C. Test for Nickel Ion E. Test for 17b Zinc Ion 13b D. Test for Aluminum Ion 17b The Next Step 11f To digest the precipitate: to make the precipitate more compact 11f The Experimental Procedure is written for a single reference solution. If you are simul- taneously identifying cations in both a reference solution and a test solution, adjust the procedure accordingly. If the test solution is a sample with an environmental origin, then gravity filter 10-15 mL before beginning the Experimental Procedure. Prepare the hot water bath for use in Parts A and D. 1. Separate the hydroxide precipitates from the amphoteric hydroxides. To 2 mL of the reference solution (in a small test tube) add 10 drops of 6 M NaOH (Caution!) (see Dry Lab 4.A). Centrifuge and save the precipitate. Test for complete precipita- tion (see Dry Lab 4.B) by adding several drops of 6 M NaOH to the supernatant. Decant the…
1. How quantity Qsp and Ksp can be used in predicting precipitate formation? 2. How precipitation titrations work? 3. How will you differentiate Mohr method, Volhard method and Fajans method?
4. A 0.584gram sample of a fertilizer was analyzed for its N content by the kjeldahl method, the liberated NH3 being collected in 50mL of 0.1062M HCl. The excess acid required 11.89mL back-titration with 0.093M NaOH. Express the result of this analysis in terms of % b. Urea, H₂NCONH₂ a. N
Using EXCEL, or other suitable program, prepare plots of pPb?* vs mL titrant added for the following titrations. a) 25.00 mL of 0.0100 M sulfide is titrated with 0.0100 M Pb. Calculate a point every 0.5 mL until you are 5 ml past Va Be sure to include a point at Momo1 Ids Mmo Alded Ve. ML removed b) 25.00 mL of 0.0100 M iodate is titrated with 0.0100 M Pb? Calculate a point every 0.5 mL until you are 5 mL past Ve Be sure to include a point at Ve.
A 2.1562 g sample that may contain NaOH, NaHCO3 and Na2CO3 alone or in compatible mixtures reqıires 31.2 ml of 0.1082 M HCl for titration to the phenolphthalein end point and additional 52.4 ml of the same acid to bromocresol green end point. Calculate the percentages of compound(s) in the sample (M. Mass of NaOH:40 g/mol, M. Mass of NaHCO3: 84.01 g/mol, M. Mass of Na2CO3: 105.99 g/mol)?
20 20 Consider the reaction of a 20.0 mL of 0.220 M CsHsNHCI (Ka = 5.9 x 10-6) with 12.0 mL of 0.231 M CsOH. a b L Write the net ionic equation for the reaction that takes place. Be sure to include the proper phases for all species within the reaction. What quantity in moles of CsHsNH+ would be present at the start of the titration? C L What quantity in moles of OH- would be present in 12.0 mL of CSOH solution? P (D e f g L What species would be left in the beaker after the reaction goes to completion? What quantity in moles of CsHsNH+ would be left in the beaker after the reaction goes to completion? L What quantity in moles of CsHsN are produced after the reaction goes to completion? L What would be the pH of this solution after the reaction goes to completion and the system reaches equilibrium?
50.0 mL of 0.0500 M HCN (K3=4.9x1010) is being titrated with 0.0500 M Ba(OH)2 . Please answer the following questions? A). The pH at equivalence point is . (Keep your ans to 3 sig figs) B). What would be the pH of the solution after 55mL of Ba(OH)2 is added to the solution of 50.0 mL of 0.0500 M HCN? pH=
A silver nitrate soluti on contains 14.77 g of primary standard AGNO3 , in 1.00 L what volume of this solution is needed toreact completely with 50.00 ml. of 0.01808 M Na2S. 1. O10.40 ml. 2. O 20.79 ml. 6.10 ml. 4. O12.31 ml. 5. O18.21 ml. 3.
Consider the following list of indicators. Indicator pK, Methyl red Chlorophenol red Ethyl orange m-nitrophenol Bromphenol blue 5.00 6.25 4.34 8.28 3.20 Which one of these indicators would be best to use in a titration of a 0.100 M solution of acetic acid (K, - 1.8 x 105) witha 0.100 M solution of strong base. Bromphenol blue Methyl red m-nitrophenol Chlorophenol red Ethyl orange

SEE MORE QUESTIONS

Recommended textbooks for you

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781337399074

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781133949640

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning

Fundamentals Of Analytical Chemistry

Chemistry

ISBN:

9781285640686

Author:

Skoog

Publisher:

Cengage

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781337399074

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

Chemistry & Chemical Reactivity

Chemistry

ISBN:

9781133949640

Author:

John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:

Cengage Learning

General Chemistry - Standalone book (MindTap Cour…

Chemistry

ISBN:

9781305580343

Author:

Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS