Qualitative Analysis Scheme NOTES SAVE YOUR DECANT! * YouR UNKNOWN WILL HAVE 1-4 TONS. * write down your observations here for the unknown Solution-be as detailed as Possible so you can use these notes to write your ion summary * write your Observations in a way that makes sense to you lie. A decant could be a cear I colorless solution), if you åre running out Of Space write additional observDirions in your lab notebook. * DO NOT LOSE THIS PAPER You WILL NEED TO INCLUDE IT IN YoUR LAB REPORT Hewe Pbt? Ag*, Hg,", Pb“, Ca*“, Mg**, Ba", NHa" NH3 19) SPecial +est (NHu) lit. Ped> bhe OBSERVATIONS (Wa) 12H PpY Decant Sand FOR Have NHY UNKNOWN UNK # SOLUTION NO Ppt (an,Mg 88 (2) Add (NH4)z SO4 Sdlid Decant Camplete Ba Soyis) white ppt Ppt. Ag, Hg?, Cat2, Mgr2,NHt PH must be basic gouhave Bazt PHZ8 (€) b) Add Said Deant ) Mg test b) you have Ca c) PH mvst be 7 ]! PH must M9LOH)z Cs) bluelpur ple Ppt be basic SAVE YOUR DECANT Have Mg2t

Qualitative Analysis Scheme NOTES SAVE YOUR DECANT! * YouR UNKNOWN WILL HAVE 1-4 TONS. * write down your observations here for the unknown Solution-be as detailed as Possible so you can use these notes to write your ion summary * write your Observations in a way that makes sense to you lie. A decant could be a cear I colorless solution), if you åre running out Of Space write additional observDirions in your lab notebook. * DO NOT LOSE THIS PAPER You WILL NEED TO INCLUDE IT IN YoUR LAB REPORT Hewe Pbt? Ag, Hg,", Pb“, Ca“, Mg**, Ba", NHa" NH3 19) SPecial +est (NHu) lit. Ped> bhe OBSERVATIONS (Wa) 12H PpY Decant Sand FOR Have NHY UNKNOWN UNK # SOLUTION NO Ppt (an,Mg 88 (2) Add (NH4)z SO4 Sdlid Decant Camplete Ba Soyis) white ppt Ppt. Ag, Hg?, Cat2, Mgr2,NHt PH must be basic gouhave Bazt PHZ8 (€) b) Add Said Deant ) Mg test b) you have Ca c) PH mvst be 7 ]! PH must M9LOH)z Cs) bluelpur ple Ppt be basic SAVE YOUR DECANT Have Mg2t

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter9: Acids, Bases, And Salts

Section: Chapter Questions

Problem 9.52E

See similar textbooks

Similar questions

An acid is titrated with NaOH. The following beakers are illustrations of the contents of the beaker at various times during the titration. These are presented out of order. Note: Counter-ions and water molecules have been omitted from the illustrations for clarity. (a) (b) (c) (d) (e) a. Is the acid a weak or strong acid? How can you tell? b. Arrange the beakers in order of what the contents would look like as the titration progresses. c. For which beaker would pH = pKa? Explain your answer. d. Which beaker represents the equivalence point of the titration? Explain your answer. e. For which beaker would the Ka value for the acid not be necessary to determine the pH? Explain your answer.
. What does it mean to say that an acid is strong in aqueous solution? What does this reveal about the ability of the acids anion to attract protons?
What acid-base indicators, shown in Figure 18.24 would be suitable for the neutralization reaction whose titration curve is shown in Figure 18.30?Why?
Describe in words the titration of an acid with a base. Be sure to use the terms equivalence point, indicator, and end point correctly.
What are at least three of the primary chemical concepts that are needed to complete the experiment and interpret the results in determination of solution concentration via titration.
Why you should not start a titration with zero mL as an initial volume?
You are titrating an acidic solution with a basic one, and justrealized you forgot to add the indicator that tells you whenthe equivalence point is reached. In this titration, the indicatorturns blue at the equivalence point from an initiallycolorless solution. You quickly grab a bottle of indicator andadd some to your titration beaker, and the whole solutionturns dark blue. What do you do now?
A student performs a titration in order to determine the concentration of a hydrochloric acid solution. Early in the procedure, the flask is not placed directly under the buret and a small amount of the titrant, KOH, drains down the outside of the flask. How will this error affect the calculated value of the HCI concentration? O more information is necessary O calculated value = actual value O calculated value > actual value O calculated value < actual value
3. Suppose a student is doing Part C of the experiment. The student gets to the point where all the 6 M HCI has been added, but no precipitate of aspirin forms. What should the student de nowa nU to noileol a. Conclude that the original sample contained no aspirin. b. Add more HCl even though the directions do not call for it. c. Stir the liquid to which the HCl has been added. Explain your answer:
What is an indicator and what is it used for in the concept of Acid-Base Titration? Explain
ANALYSIS: You are titrating an acid to determine the concentration of the base. The endpoint of neutralization is reached but the stopcock of the burette sticks slightly and allows a few more drops of acid to fall into the solution. How will this affect your calculations for the concentration of the base?
Scientists and engineers use solutions in their work and investigations. Conduct some research to discover information about two laboratory-based methods that utilize solutions: titration and gravimetric analysis. Use your research to answer these questions. What is titration used to discover? How is it similar to or different from what gravimetric analysis is used to discover? What is the process of titration? What is the process of gravimetric analysis? In what ways have the knowledge and application of solutions benefited scientific advancement? In what ways have the knowledge and application of solutions benefited society?