LAB 4 carroll - Name: ID Numbe Quiz Section: Lab Partner:...

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Name: Quiz Section: ID Numbe Lab Partner: Total Points = 60 (5 notebook, 55 template) PURPOSE AND METHOD DATA AND CALCULATIONS A. Flame emission determination of [K+] in the 0.50 M KCl + KHP (sat) solution Preparation of Standards DATA 50 mL of each standard solution (from prelab) Solution Intensity Standard [K+], (M) mL of stock Standard 1 7.50E-05 81 1 7.50 E-5 0.75 Standard 2 1.50E-04 171 2 1.50 E-4 1.50 Standard 3 2.25E-04 248 3 2.25 E-4 2.25 Standard 4 3.00E-04 313 4 3.00 E-4 3.00 Standard 5 3.75E-04 375 5 3.75 E-4 3.75 Intensity 20.5 308 3 pts slope 9.73E+05 y-intercept 18.6 Table 1 : Volume of 5.00x10 -3 M needed to make Table 2 : Flame Photometer Data [K + ], (M) Temperature, o C KHP(sat) in 0.50 M KCl M -1 How are the solubility products (Ksp) of KHP at various temperatures determined? ( 3 pts ) How is Ksp in a saturated solution of KHP in 0.50 M KCl determined? (3 pts ) EXPERIMENT 4: THERMODYNAMICS II THE TEMPERATURE DEPENDENCE OF THE SOLUBILITY PRODUCT, HEAT OF SOLUTION, AND ENTROPY OF SOLUTION OF POTASSIUM HYDROGEN PHTHALATE By signing below, you certify that you have not falsified data, that you have not plagiarized any part of this lab report, and that all calculations and responses other than the reporting of raw data are your own independent work. Failure to sign this declaration will cost you 5 points. Signature: Note: All sections of this report must be typed Plot of Intensity vs [K+] (M) Add a Trendline and Trendline Eqn and on your plot and be sure to include a titles for the plot and each axis. 5.00E-05 1.00E-04 1.50E-04 2.00E-04 2.50E-04 3.00E-04 3.50E-04 4.00E-04 0 50 100 150 200 250 300 350 400 f(x) = 973333.33x + 18.6 Intensity vs [K+] M Column G Linear Regression for Column G Molarity [K+] M Intensity
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LAB 4 carroll - Name: ID Numbe Quiz Section: Lab Partner:...

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