1. Complete and turn in the Data and Calculations page for this experiment. Include calculations for the determination of the exact concentration of your group’s EDTA solution, and the Ca2+ ion concentration (in M) and the hardness (in ppm CaCO3) of yourunknown water sample. Organize and label your calculations and report all measurementsand calculations with the correct number of significant figures.2. How would you characterize the precision of your experimental measurements in this lab?Is the level of precision reasonable or unreasonable? Explain your answer.Data and Calculations PageRecord all of your group’s experimental data below. Carry out and include all of the calculations needed to determine the Ca2+ ion concentration (in M) and the hardness of your unknown water sample (in ppm CaCO3). Attach additional pages as needed. Part 1: Preparation of the EDTA SolutionStep 2: Calculate the mass (in g) of disodium elhylenediaminetetraacetale, NaCHO,N; 2H,0.requirad lo pepare a 100.0 m. solution with a concentration of 0.00800 M. Inclade hiscalculation on the Data and Calcalations page.Preparing the EDTA solution and calculating its concentration (sleps 3-7):2539220ma of boatand EDTA solule100.0 ml.mass of emptyweigh boatvolumetrie flaskPart 2: Performing a Blank Titration of the Eriochrome Black TIndicatorPreparing the blank analyte olution (steps 4-5)volume of DI water usod: 250 ml.volume of pH 10 buffer solution added: 50 ml.volume of 0.030 M MgC1, solution addel: 100 mil.amount of Eriochrome Black Tindicator: enough so that color of Mg-indicator complex is visibleCarrying out the blank titration and determining the blank volume (steps 6-7)blank solutioninitial buretfinal buretblank solution cadbefoee titrationvolume readingvolume readingpoint of titratioPart 3: Determination of the Hardnes of an Unknown Water SampleUnknowa water sample snalyaed: 1Preparing the unknowa water sample analyte solutions for cach trial (steps 2-3):volume of sample used: 250 ml.volume of pH 10 buffer solution sdided: S0 ml.volume of 0.030 M MgCl, solution added: 10D0 ml.amount of Eriochrome Black Tindicator: enough so that color of Mg-indicator complex is visible1020initial realingfor trial Ifinal readingfinal eadingfinal readingfor trial 3for trial 1for trial 2and initial readingfor trial 2and initial seadingfor trial 3

Hii there, As there are multiple question posted. we are answering first question. If you need…

Answered: Complete and turn in the Data and…

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

Question

1. Complete and turn in the Data and Calculations page for this experiment. Include calculations for the determination of the exact concentration of your group’s EDTA solution, and the Ca2+ ion concentration (in M) and the hardness (in ppm CaCO3) of your
unknown water sample. Organize and label your calculations and report all measurements
and calculations with the correct number of significant figures.
2. How would you characterize the precision of your experimental measurements in this lab?
Is the level of precision reasonable or unreasonable? Explain your answer.

Data and Calculations Page
Record all of your group’s experimental data below. Carry out and include all of the calculations needed to determine the Ca2+ ion concentration (in M) and the hardness of your unknown water sample (in ppm CaCO3). Attach additional pages as needed.